NA-OH
NA-ON
NA-OS
NA-OT
NA-OW
NE-1
NE-2
NE-3
NE-4
NE-5
NE-6
NE-7
NE-8
NG-AB
NG-AD
NG-AK
NG-AN
NG-BA
NG-BE
NG-BO
NG-BY
NG-CR
NG-DE
NG-EB
NG-ED
NG-EK
NG-EN
NG-FC
NG-GO
NG-IM
NG-JI
NG-KD
NG-KE
NG-KN
NG-KO
NG-KT
NG-KW
NG-LA
NG-NA
NG-NI
NG-OG
NG-ON
NG-OS
NG-OY
NG-PL
NG-RI
NG-SO
NG-TA
NG-YO
NG-ZA
ISO 3166-2