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]: 1, 2, ['S', '7763']
[EX A]: 3677S

[EX Q]: 3, 11, ['417', 'C', '4183', '9031', 'a', 'e', 'v', '4967', 'G', 'L', '8409', 'X', '6863', '8165', '1111', '6627', 'V', 'd', '45', '299', 'o']
[EX A]: 9048LG7694vea13093814

[EX Q]: 3, 6, ['7111', '7767', 'M', '4155', '9591', '489', 'x', 'S', '5751', 'w', 'H', '913', 'p', 'e']
[EX A]:
98419595514M