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.

12, 16, ['u', '551', 'L', 'g', 'd', '2453', 'J', 'f', '8211', 'L', '241', 'l', 'G', 'F', '9043', 'f', '3977', 'P', '4371', '7687', 'A', '8181', '5251', 't', '6837']
f9043FGl

3, 4, ['3979', 'L', 'x', '2961', '5933', 'q', 'y', '6509', '3047', '3919', '2015', '6887', 'u', 'F', '8617', '3793', 's', 'x', '2453', '5763', '2399', '6635', '8039', 'R', '5495', '2175', '8067']
2961x

4, 21, ['W', '9229', '3413', 'p', '8757', '1137', '1651', '307', '7109', '4363', '9987', '8505', 'T', 'V', '4603', 't', '5139', '3365', 'q', '5737', '2707', 'r', 'j', 'D']

27075737q33655139t4603VT8505998743637109307165111378757p