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length = 3 i caught an error 1,2,3 4 length = 3 length = 3 I caught an error 1,2, length = 3 I caught an error 1,2, length = 3 I caught an error 1,2, length = 3 I caught an error 1,2, length = 3 I caught an error 1,2, 1,2, undefined length = 3