B
+27 Bougainville
+27
C
+29 Central Province
+29
E
East New Britain
+25 Eastern Highlands
+25
F
+29 Fly
+29
G
+31 Gulf
+31
M
+31 Madang
+31
+31 Morobe
+31
N
+29 National Capital District
+29
New Ireland
O
+29 Oro
+29
S
+26 Sandaun (West Sepik)
+26