Double Consonants
NT
Ntaiv (ladder)
http://www.photospin.com/about/index.cfm?pid=7
CH
DH
**
DL
+
HL
HM
**
HN
**
KH
ML
NC
NK
NP
NQ
NR
NT
NY
PH
PL
QH
RH
TH
TS
TX
XY
