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 find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output 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. Perform the operations in order, i.e., do not concatenate the elements and then reverse the string.
Input: 5, 12, ['4655', '1553', '3687', '3491', '439', '3969', 'i', 'w', '6269', '5909', 'X', 'u', 'l', 'X', '3747', 'g', '1797', 'C', 'W', '827', '5829', 't', '3859', 'O']

uX59096269wi3969439