~~``也就是基数形式。！

one-first two-second three-third four-fourth five-fifth six-sixth seven-seventh eight-eighth nine-ninth ten-tenth eleven-eleventh twelve-twelfth thirteen-thirteenth forteen-forteenth fifteen-fifteenth sixteen-sixteenth seventeen-seventeenth eighteen-eighteenth ninteen-ninteenth twenty-twentieth twenty one--twenty-first twenty two--twenty-second twenty three--twenty-third twenty four--twenty-fourth twenty five--twenty-fifth twenty six--twenty-sixth twenty seven--twenty-seventh twenty eight--twenty-eighth twenty nine--twenty-ninth thirty-thirtieth thirty one--thirty-first
you are so boring!