Pha , ផ - the 22nd letter of the Khmer alphabet , consonant of group "A" in the syllable can only be an initial . denotes an aspirated deaf labial labial explosive consonant.
Signed pha - thang pha .

Tien Pha (Khmer)

Phaottu (Kannada)
Literature
- Grammar of the Khmer language. Yu.A. Gorgoniev . M.2009