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: 2, 10, ['R', '4919', 'm', '9757', 't', '6059', 'E', 'Q', 'f', 'w', '7021', 'n', 'F', 'b', 'V', '1555', '1807', '3655', 'I', '6787', '493', 'F', 't']

wfQE6059t9757m4919