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NOC 1

AFG - Afghanistan AHO - Netherlands Antilles AIN - Individual Neutral Athletes ALB - Albania ALG - Algeria AND - Andorra ANG - Angola ANT - Antigua and Barbuda ANZ - Australasia ARG - Argentina ARM - Armenia ARU - Aruba ASA - American Samoa AUS - Australia AUT - Austria AZE - Azerbaijan BAH - The Bahamas BAN - Bangladesh BAR - Barbados BDI - Burundi BEL - Belgium BEN - Benin BER - Bermuda BHU - Bhutan BIH - Bosnia and Herzegovina BIZ - Belize BLR - Belarus BOH - Bohemia BOL - Bolivia BOT - Botswana BRA - Brazil BRN - Bahrain BRU - Brunei Darussalam BUL - Bulgaria BUR - Burkina Faso CAF - Central African Republic CAM - Cambodia CAN - Canada CAY - Cayman Islands CGO - Congo CHA - Chad CHI - Chile CHN - People's Republic of China CIV - Côte d'Ivoire CMR - Cameroon COD - Democratic Republic of the Congo COK - Cook Islands COL - Colombia COM - Comoros COR - Korea Team CPV - Cabo Verde CRC - Costa Rica CRO - Croatia CRT - Crete CUB - Cuba CYP - Cyprus CZE - Czechia DEN - Denmark DJI - Djibouti DMA - Dominica DOM - Dominican Republic ECU - Ecuador EGY - Egypt EOR - Refugee Olympic Team ERI - Eritrea ESA - El Salvador ESP - Spain EST - Estonia ETH - Ethiopia EUN - Unified Team FIJ - Fiji FIN - Finland FRA - France FRG - West Germany FSM - Federated States of Micronesia GAB - Gabon GAM - The Gambia GBR - Great Britain GBS - Guinea Bissau GDR - East Germany GEO - Georgia GEQ - Equatorial Guinea GER - Germany GHA - Ghana GRE - Greece GRN - Grenada GUA - Guatemala GUI - Guinea GUM - Guam GUY - Guyana HAI - Haiti HKG - Hong Kong, China HON - Honduras HUN - Hungary INA - Indonesia IND - India IOA - Independent Olympic Athletes IRI - Islamic Republic of Iran IRL - Ireland IRQ - Iraq ISL - Iceland ISR - Israel ISV - United States Virgin Islands ITA - Italy IVB - British Virgin Islands JAM - Jamaica JOR - Jordan JPN - Japan KAZ - Kazakhstan KEN - Kenya KGZ - Kyrgyzstan KIR - Kiribati KOR - Republic of Korea KOS - Kosovo KSA - Kingdom of Saudi Arabia KUW - Kuwait LAO - Lao People's Democratic Republic LAT - Latvia LBA - Libya LBN - Lebanon LBR - Liberia LCA - Saint Lucia LES - Lesotho LIE - Liechtenstein LTU - Lithuania LUX - Luxembourg MAD - Madagascar MAL - Malaya MAR - Morocco MAS - Malaysia MAW - Malawi MDA - Republic of Moldova MDV - Maldives MEX - Mexico MGL - Mongolia MHL - Marshall Islands MIX - Mixed team MKD - North Macedonia MLI - Mali MLT - Malta MNE - Montenegro MON - Monaco MOZ - Mozambique MRI - Mauritius MTN - Mauritania MYA - Myanmar NAM - Namibia NBO - North Borneo NCA - Nicaragua NED - Netherlands NEP - Nepal NFL - Newfoundland NGR - Nigeria NIG - Niger NOR - Norway NRU - Nauru NZL - New Zealand OMA - Oman PAK - Pakistan PAN - Panama PAR - Paraguay PER - Peru PHI - Philippines PLE - Palestine PLW - Palau PNG - Papua New Guinea POL - Poland POR - Portugal PRK - Democratic People's Republic of Korea PUR - Puerto Rico QAT - Qatar RHO - Rhodesia ROC - ROC ROU - Romania RSA - South Africa RUS - Russian Federation RWA - Rwanda SAA - Saar SAM - Samoa SCG - Serbia and Montenegro SEN - Senegal SEY - Seychelles SGP - Singapore SKN - Saint Kitts and Nevis SLE - Sierra Leone SLO - Slovenia SMR - San Marino SOL - Solomon Islands SOM - Somalia SRB - Serbia SRI - Sri Lanka SSD - South Sudan STP - São Tomé and Príncipe SUD - Sudan SUI - Switzerland SUR - Suriname SVK - Slovakia SWE - Sweden SWZ - Eswatini SYR - Syrian Arab Republic TAN - United Republic of Tanzania TCH - Czechoslovakia TGA - Tonga THA - Thailand TJK - Tajikistan TKM - Turkmenistan TLS - Timor-Leste TOG - Togo TPE - Chinese Taipei TTO - Trinidad and Tobago TUN - Tunisia TUR - Türkiye TUV - Tuvalu UAE - United Arab Emirates UAR - United Arab Republic UGA - Uganda UKR - Ukraine UNK - Unknown URS - Soviet Union URU - Uruguay USA - United States UZB - Uzbekistan VAN - Vanuatu VEN - Venezuela VIE - Vietnam VIN - Saint Vincent and the Grenadines VNM - South Vietnam WIF - West Indies Federation YAR - North Yemen YEM - Yemen YMD - South Yemen YUG - Yugoslavia ZAM - Zambia ZIM - Zimbabwe

NOC 2 (optional)

AFG - Afghanistan AHO - Netherlands Antilles AIN - Individual Neutral Athletes ALB - Albania ALG - Algeria AND - Andorra ANG - Angola ANT - Antigua and Barbuda ANZ - Australasia ARG - Argentina ARM - Armenia ARU - Aruba ASA - American Samoa AUS - Australia AUT - Austria AZE - Azerbaijan BAH - The Bahamas BAN - Bangladesh BAR - Barbados BDI - Burundi BEL - Belgium BEN - Benin BER - Bermuda BHU - Bhutan BIH - Bosnia and Herzegovina BIZ - Belize BLR - Belarus BOH - Bohemia BOL - Bolivia BOT - Botswana BRA - Brazil BRN - Bahrain BRU - Brunei Darussalam BUL - Bulgaria BUR - Burkina Faso CAF - Central African Republic CAM - Cambodia CAN - Canada CAY - Cayman Islands CGO - Congo CHA - Chad CHI - Chile CHN - People's Republic of China CIV - Côte d'Ivoire CMR - Cameroon COD - Democratic Republic of the Congo COK - Cook Islands COL - Colombia COM - Comoros COR - Korea Team CPV - Cabo Verde CRC - Costa Rica CRO - Croatia CRT - Crete CUB - Cuba CYP - Cyprus CZE - Czechia DEN - Denmark DJI - Djibouti DMA - Dominica DOM - Dominican Republic ECU - Ecuador EGY - Egypt EOR - Refugee Olympic Team ERI - Eritrea ESA - El Salvador ESP - Spain EST - Estonia ETH - Ethiopia EUN - Unified Team FIJ - Fiji FIN - Finland FRA - France FRG - West Germany FSM - Federated States of Micronesia GAB - Gabon GAM - The Gambia GBR - Great Britain GBS - Guinea Bissau GDR - East Germany GEO - Georgia GEQ - Equatorial Guinea GER - Germany GHA - Ghana GRE - Greece GRN - Grenada GUA - Guatemala GUI - Guinea GUM - Guam GUY - Guyana HAI - Haiti HKG - Hong Kong, China HON - Honduras HUN - Hungary INA - Indonesia IND - India IOA - Independent Olympic Athletes IRI - Islamic Republic of Iran IRL - Ireland IRQ - Iraq ISL - Iceland ISR - Israel ISV - United States Virgin Islands ITA - Italy IVB - British Virgin Islands JAM - Jamaica JOR - Jordan JPN - Japan KAZ - Kazakhstan KEN - Kenya KGZ - Kyrgyzstan KIR - Kiribati KOR - Republic of Korea KOS - Kosovo KSA - Kingdom of Saudi Arabia KUW - Kuwait LAO - Lao People's Democratic Republic LAT - Latvia LBA - Libya LBN - Lebanon LBR - Liberia LCA - Saint Lucia LES - Lesotho LIE - Liechtenstein LTU - Lithuania LUX - Luxembourg MAD - Madagascar MAL - Malaya MAR - Morocco MAS - Malaysia MAW - Malawi MDA - Republic of Moldova MDV - Maldives MEX - Mexico MGL - Mongolia MHL - Marshall Islands MIX - Mixed team MKD - North Macedonia MLI - Mali MLT - Malta MNE - Montenegro MON - Monaco MOZ - Mozambique MRI - Mauritius MTN - Mauritania MYA - Myanmar NAM - Namibia NBO - North Borneo NCA - Nicaragua NED - Netherlands NEP - Nepal NFL - Newfoundland NGR - Nigeria NIG - Niger NOR - Norway NRU - Nauru NZL - New Zealand OMA - Oman PAK - Pakistan PAN - Panama PAR - Paraguay PER - Peru PHI - Philippines PLE - Palestine PLW - Palau PNG - Papua New Guinea POL - Poland POR - Portugal PRK - Democratic People's Republic of Korea PUR - Puerto Rico QAT - Qatar RHO - Rhodesia ROC - ROC ROU - Romania RSA - South Africa RUS - Russian Federation RWA - Rwanda SAA - Saar SAM - Samoa SCG - Serbia and Montenegro SEN - Senegal SEY - Seychelles SGP - Singapore SKN - Saint Kitts and Nevis SLE - Sierra Leone SLO - Slovenia SMR - San Marino SOL - Solomon Islands SOM - Somalia SRB - Serbia SRI - Sri Lanka SSD - South Sudan STP - São Tomé and Príncipe SUD - Sudan SUI - Switzerland SUR - Suriname SVK - Slovakia SWE - Sweden SWZ - Eswatini SYR - Syrian Arab Republic TAN - United Republic of Tanzania TCH - Czechoslovakia TGA - Tonga THA - Thailand TJK - Tajikistan TKM - Turkmenistan TLS - Timor-Leste TOG - Togo TPE - Chinese Taipei TTO - Trinidad and Tobago TUN - Tunisia TUR - Türkiye TUV - Tuvalu UAE - United Arab Emirates UAR - United Arab Republic UGA - Uganda UKR - Ukraine UNK - Unknown URS - Soviet Union URU - Uruguay USA - United States UZB - Uzbekistan VAN - Vanuatu VEN - Venezuela VIE - Vietnam VIN - Saint Vincent and the Grenadines VNM - South Vietnam WIF - West Indies Federation YAR - North Yemen YEM - Yemen YMD - South Yemen YUG - Yugoslavia ZAM - Zambia ZIM - Zimbabwe

Discipline (optional)

BKB - Basketball CUR - Curling FBL - Football HBL - Handball HOC - Hockey IHO - Ice Hockey LAX - Lacrosse POL - Polo RGB - Rugby SOF - Softball VVO - Volleyball WPO - Water Polo

Gender (optional)

Either Men Women

Examples:

• USA + URS + BKB = all basketball matches (men/women) between the US and the USSR
• TCH + VVO + men = head to heads men's volleybal.each do |Czechoslovakia against all other countries|
• BRA = head to heads all sports.each do |Brazil against all other countries|