01 02 03 04 05 06 07 08 09 10 eleven twelve 14 16 16_2 seventeen 018_a thousand eighteen 19 twenty 21 22 23 24 twenty five 26 27 28 29 thirty 31 32 33 34 35 36 37 38 39 40 forty one 42 forty three 44 45 forty six 47 48 49 50 51 52