Counting from zero, plus the round numbers you need first.

• uziro / izezero / nil (ize = nothing)
• kunyeone
• kubilitwo
• kuthathuthree
• kunefour
• kuhlanufive
• isithuphasix
• isikhombisaseven
• isishiyagalombilieight
• isishiyagalolunyenine
• ishumiten
• amashumi amabilitwenty
• amashumi amathathuthirty
• amashumi amahlanufifty
• ikhuluone hundred