print"""12 13 14 15 16 17 18 23 24 25 26 27 28 29 34 35 36 37 38 39 45 46 47 48 49 56 57 58 59 67 68 69 78 79 89 123 135 147 159 234 246 258 345 357 369 456 468 567 579 678 789 1234 1357 2345 2468 3456 3579 4567 5678 6789 12345 13579 23456 34567 45678 56789 123456 234567 345678 456789 1234567 2345678 3456789 12345678 23456789 123456789"""
Note that non-ascii characters in the above source code will be escaped (such as \x9f).