This letter has the same sound as the English "c" in "cat, come, cut, fact, etc.", but is pronounced a little softer than "ck" in "lack, pack, struck, etc.".
Modern writers almost exclusively employ "k", where formerly "c" (before "a", "o", "u", all consonants and hyphens, and at the end of words) and "qu" (before "e" and "i") were used. Bearing this in mind it is easy to find in this dictionary expressions originally written according to the old spelling, as acó, caácò, catacá, cácac, bác-hò, bác-it, báquid, quíquic, etc., under akó, kaákò, kataká, kákak, bákhò, bák-it, bákid, kíkik, etc.
The prefixes pan-, hi-, ha-, etc., if composed with words beginning with the letter "k", become pang-, hing-, hang-, etc. and the "k" drops out, e.g. karós-pangarós; kaláyo-hingaláyo; kuyús-hanguyús, etc.