基数词序数词

　　onefirst/1st

　　twosecond/2nd

　　threethird/3rd

　　fourfourth/4th

　　fivefifth/5th

　　sixsixth/6th

　　sevenseventh/7th

　　eighteighth/8th

　　nineninth/9th

　　tententh/10th

　　eleveneleventh/11th

　　twelvetwelfth/12th

　　thirteenthirteenth/13th

　　fourteenfourteenth/14th

　　fifteenfifteenth/15th

　　sixteensixteenth/16th

　　seventeenseventeenth/17th

　　eighteeneighteenth/18th

　　nineteennineteenth/19

　　twentytwentieth/20th

　　twenty-onetwenty-first/21st

　　twenty-twotwenty-second/22nd

　　twenty-threetwenty-third/23rd

　　twenty-fourtwenty-fourth/24th

　　twenty-fivetwenty-fifth/25th

　　twenty-sixtwenty-sixth/26th

　　twenty-seventwenty-seventh/27th

　　twenty-eighttwenty-eighth/28th

　　twenty-ninetwenty-ninth/29th

　　thirtythirtieth/30th