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 Input:
8, 9, ['s', 'X', '6737', 'M', 'm', 'N', 'a', 'Q', 't']

Ex Output:
tQ


Ex Input:
2, 22, ['43', 'V', '469', '8463', 'E', 'J', 'N', '4049', 'f', '8529', 'R', 'P', 't', '6217', 'v', '8311', 'R', '2055', 'g', '6011', '2567', 'O', 'r', 'K', '8757', 'l', '9205', 'k', '6959']

Ex Output:
O76521106g5502R1138v7126tPR9258f9404NJE3648964V


Ex Input:
3, 13, ['2717', '7753', 'e', 'M', '6479', '2039', '751', '4487', 'f', 'p', '9581', '5303', 'l', 'J', '181', '925', '9405', 'b', 'h']

Ex Output:

l30351859pf784415793029746Me