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: 6, 7, ['E', 'A', 'd', 'a', 'S', '851', '8465', '3205', '5169', '7097', '1679', '3875', 'B', '4761']

A: 5648158
****
Q: 5, 8, ['9889', 'z', '895', 'W', 'j', 'K', '7047', '9723', '6281']

A: 32797407Kj
****
Q: 12, 21, ['T', '1275', 'Z', 'X', '271', 't', '1133', 'J', 'B', '5611', 'f', '2569', 'p', 'x', '5083', 'A', '4461', 'u', 'r', 'E', 'T', '3177', '8537', 'y', '263', '1793']

A:
TEru1644A3805xp9652
****