Double Consonants
QH
qhiav/qhav(ginger)
http://www.th-vegetable.com/picture/pic5002.gif
CH
DH
DL
HL
HM
HN
KH
ML
NC
NK
NP
NQ
NR
NT
NY
PH
PL
QH
RH
TH
TS
TX
XY