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.

[EX Q]: 2, 3, ['4601', '1107', 'R']
[EX A]: R7011

[EX Q]: 5, 5, ['8095', 'D', '9477', '9307', '9355', 'U', 'y', '5197', '2691', '3061']
[EX A]: 5539

[EX Q]: 2, 3, ['3861', 'P', 'Z', '4131', 'R', '1763', 'b', 'S', '3745', 'l', 'A', 'a', 'w', '2635', '2637', 'j', '4107']
[EX A]:
ZP