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.

4, 6, ['U', '5099', '1125', 'U', '1693', '7717', 'P', '7679', 'E', '7747', 'D', 'Z', 'E', '4473']
77171693U

3, 5, ['q', 'G', '9871', '3427', 'Q', '1993', 'H']
Q34279871

13, 18, ['6601', '989', '7973', '8373', 'I', 'n', 'I', 'a', 'C', '2817', 'P', 'z', 'g', 'a', 'a', 'T', '1269', '185']

1851269Taag