rename some functions

aky15

2023-04-17 b3b4c1bc5bb068c9aff99740e6257d12c6676ff7

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una    isa
pangalawang    dalawa
pangatlo    tatlo
ikaapat    apat
ikalimang    lima
ikaanim    ikaanim
ikapitong    pito
ikawalo    walo
ikasiyam    siyam