1:GY:GUY:GUYANA:CUYUNI/MAZARUNI:VII-1  Cuyuni
2:GY:GUY:GUYANA:CUYUNI/MAZARUNI:VII-2 Mazaruni/L.B.E.Rive
1:GY:GUY:GUYANA:POTARO/SIPARUNI:VIII-1 Ireng/Upper Potaro
2:GY:GUY:GUYANA:POTARO/SIPARUNI:VIII-2 Lower Potaro/Ladsm
1:GY:GUY:GUYANA:BARIMA/WAINI:I-1  Barima
2:GY:GUY:GUYANA:BARIMA/WAINI:I-2  Waini
1:GY:GUY:GUYANA:POMEROON/SUPENAAM:II-1 Moruka/Pomeroon
2:GY:GUY:GUYANA:POMEROON/SUPENAAM:II-2 Somerset And Berks
1:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-1 East Berbice/W.Canje
2:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-2  East Canje/E.C.Berb
3:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-3 Black Bush Polder
4:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-4 Lower Corentyne Rive
5:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-5 Left Bank Upper Canj
6:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-6 Upper Canje/Corentyn
7:GY:GUY:GUYANA:EAST BERBICE/CORENTYNE:VI-7 Upper Corentyne
1:GY:GUY:GUYANA:DEMERARA/MAHAICA:IV-1 Moblissa/La Reconnai
2:GY:GUY:GUYANA:DEMERARA/MAHAICA:IV-2 Buxton/Mahaica
1:GY:GUY:GUYANA:UPPER DEMERARA/BERBICE:X-1 Right Bank Essequibo
2:GY:GUY:GUYANA:UPPER DEMERARA/BERBICE:X-2 Torani/Bulletwood
1:GY:GUY:GUYANA:UPPER TAKUTU/U.ESSEQUIBO:IX-1 Rupununi West
2:GY:GUY:GUYANA:UPPER TAKUTU/U.ESSEQUIBO:IX-2 Rewa(Illiwa)/U.E
1:GY:GUY:GUYANA:MAHAICA/BERBICE:V-1  Mahaica/Mahaicony
2:GY:GUY:GUYANA:MAHAICA/BERBICE:V-2 Mahaicony/Berbice
1:GY:GUY:GUYANA:ESSEQUIBO I./WEST D.:Essequibo I./L.B.E.River
2:GY:GUY:GUYANA:ESSEQUIBO I./WEST D.:III-1 Essequibo Islands
3:GY:GUY:GUYANA:ESSEQUIBO I./WEST D.:III-2 Bonasika/Boerasirie
4:GY:GUY:GUYANA:ESSEQUIBO I./WEST D.:III-3 Lower West Demerara