1-10: First. second. third. fourth. fifth. sixth. seventh. eighth. ninth. tenth. 11-20: eleventh. tewlfth. thirteenth. fourteenth. fifteenth. sixteenth. seventeenth. eighteenth. nineteenth. twetnieth. 21-31: twetny-first. twetny-second. twetny-third. twetny-fourth. twetny-fifth. twetny-sixth. twetny-seventh. twetny-eighth. twetny-ninth. thirtieth. thirty-first.
