Definition: In this task, you are given inputs i,j, and A, where i and j are integers and A is a list. You need to concatenate all elements of A from the ith element to the jth element, and print the resultant string. i and j will be non-negative, and will always have a value less than the length of A. i will always be less than j.
Input: 1, 12, ['K', '3217', '4145', '2949', '3223', 'i', 't', '8863', 'j', '3227', '7605', '3831', 'Y']

K3217414529493223it8863j322776053831