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.

Ex Input:
5, 7, ['l', '3735', 't', 'D', 'M', 'G', 'p', '7645', 'u']

Ex Output:
pGM


Ex Input:
10, 14, ['345', 'd', '563', 'k', '4579', 'F', 'N', '3777', '6289', '1483', 'f', '265', '5185', 'X', '789', 'Z', 'h', 'w', 'p']

Ex Output:
X5185265f1483


Ex Input:
4, 21, ['j', 'k', 'W', '1625', 'Y', '7815', 'q', '415', '3947', '4545', 'K', '3779', '7361', '2469', '3397', 'Y', '4909', 'D', 'Y', '6171', 'T', '7443']

Ex Output:

T6171YD4909Y3397246973613779K45453947415q7815Y1625