In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

[Q]: 4, 20, ['p', '1643', 'O', '5867', 'Y', 'j', '2411', 'Z', '2563', '4757', 'B', 'b', '7489', '815', 'c', '6631', '8571', '6537', 'm', 'T']
[A]: Tm735617581366c5189847bB75743652Z1142jY7685


[Q]: 1, 2, ['4211', '3035', '3071', '3941', 'D', '1851']
[A]: 53031124


[Q]: 7, 15, ['c', 'F', '6549', 'J', '2977', 'K', 'G', '8777', '3751', 'i', 'k', 'x', '4173', '1055', '2555', '6521', 'B', '1915', '2645', '6385', '5055']
[A]:
555255013714xki15737778G