from ng̃isi (to laugh, showing the teeth), para-, ma, or tig̃ngisi, or ñgisi (person fond of grinning).

When the root begins with any other consonant, except l, n, r, the said consonant is suppressed and the letter n is appended to the prefix, as

from dolóng, (to struggle), hinólong (bold in struggling),
from,, sosón (to correct), hinóson (bold in correcting),
from,, tápod (to confide), hinápod[22] (bold in confiding)

In all of these cases, the syllable following the prefix hi is sometimes doubled, according to the use, as,

from himític, himitic,
from,, hing̃ásoy, hing̃ang̃asóy,
from,, hinóson, hinonoson,[23] etc.
Um.

This particle bears the idea of option. It is used among the verbs for the subjunctive mode. It is always combined with the interfix r or its substitutes, and is placed between the first consonant and the first vowel of the root. When the root begins with a vowel, the interfix is placed immediately before the vowel. Examples:

from cáon (to eat), cumaraón (person going to, or expected to, eat), [[21]]
from,, abót (to arrive), umabot (person expected to arrive),
from,, arò (to ask), umaarô (person expected to ask).

Some roots without r follow the rule as if they had an r, as,

from sacá (to go up, to board), sumasáca (boarder).