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

　　fourteen-fourteenth

　　fifteen-fifteenth

　　sixteen-sixteenth

　　seventeen-seventeenth

　　eighteen-eighteenth

　　nineteen-nineteenth

　　twenty-twentieth