1 length = 3 2 i caught an error 3 1,2,3 4 4 5 length = 3 6 length = 3 7 I caught an error 8 1,2, 9 length = 3 10 I caught an error 11 1,2, 12 length = 3 13 I caught an error 14 1,2, 15 length = 3 16 I caught an error 17 1,2, 18 length = 3 19 I caught an error 20 1,2, 21 1,2, 22 undefined 23 length = 3