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: 12, 19, ['F', '6647', '2521', '7321', 'h', 'T', 'j', '2447', '2709', '4231', '163', 'p', 'b', '8989', 'd', 'c', '8923', 'X', 't', '7777', 'Z', 'Q', 'b', 'f', '7787']

pb8989dc8923Xt