first second third fourth fifth sixth seventh eighth ninth tenth eleventh twelfththirteenth fourteenth fifteenth sixteenth seventeenth eighteenthnineteenth twentieth twenty-first twenty-second twenty-third

我觉得应该是这样的吧，1st, 2nd, 3rd, 4th, 5th, 6th, 7th, 8th, 9th, 10th, 11th, 12th, 13th, 14th, 15th, 16th, 17th, 18th, 19th, 20th, 21st, 22nd, 23rd.