The usual error is to say "t" in place of "c/k" and "d" in place of "g" (or sometimes "d" in place of both sounds).
Kambe, xi twala ngopfu hi ku tirhisa "g," "gw" ematshan'wini ya "dy" na "bw," na ku tirhisa "w" ematshan'wini ya "v" - (Ni ku gwelile ku ni ga wuswa).