The base form for the topic marking particle is /a/ (i.e. Jp. /wa/) which will be modified according to the last syllable of the preceding noun.
ba (‘I’) + a = baa
tii (‘hand’) + a = tii=ya hau (‘snake’) + a = hau=ya nai (‘nuts’) + a = nai=ya
Some older speakers may pronounce some words with the final /m/. In this case, add /ma/.
im (‘ocean’) + a = imma mm (‘potato’) + a = mmma
Younger speakers pronounce these words with the final /n/. in (‘ocean’) + a = inna nn (‘potato’) + a = nnna