Author is translator with New Tribes Mission, working among SWP since 1982.
I will use our orthography, since it is a simple sound system. We do not write the final glottal but I will use an apostrophe for that and for intervocalic glottal; voiceless stops are unaspirated; <ng> represents the velar nasal phoneme; <l> is high-tongued; <r> is flapped; stress is penultimate unless I say "final" in the author annotation column; there are 4 vowel phonemes (i: high front, a: low central; a slightly rounded mid vowel further back than a schwa but not quite "open o" of 'caught.' for which we use the letter <e>; and a high back rounded. We use both <o> and <u> in the orthography as a bridge to reading Tagalog... there is non-phonemic range of sound which corresponds somewhat to the rules of the orthography (last vowel of word: write as <o>, double is <oo>, otherwise, <u>.