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]: 3, 16, ['2479', 'F', '5727', '3779', '5749', '4677', 'o', 'P', 'e', '2433', 'z', '3789', 't', 'L', 'I', 'V', 'Z', 'o', 'u', '1209', 'q']
[A]: VILt9873z3342ePo7764947597737275


[Q]: 2, 3, ['2661', 'T', '8855', 'I', 'f', 'P']
[A]: 5588T


[Q]: 4, 21, ['W', 'L', 'I', '3027', 't', '4221', 'Y', '7161', 'D', 'p', '3167', '3515', 'P', 'G', 'o', '6705', '6007', 'U', 'C', 'r', 'G', 'f', '8729', 'l', '505', '2269', 'D']
[A]:
GrCU70065076oGP51537613pD1617Y1224t7203