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.

2, 4, ['B', '5601', 'v', '7431', 'z']
1347v1065

3, 12, ['2159', 'f', 'u', '2675', '7357', '9325', '1275', '8897', 'I', '2095', '5835', '577', 'g', '2783', '7843', '8517', '4185', '5847', '2645', '2357', 'l', 'v', '2239', '141', 'o', '2529', '7977', '8445', '2363']
77553855902I79885721523975375762u

4, 22, ['3621', 'A', '2659', 'R', '1831', 'x', '603', '1797', '5631', '3261', 'r', '561', '7677', '27', 'd', 'w', '4363', '8571', 'n', '2783', 'E', 'Q']

QE3872n17583634wd727767165r162313657971306x1381R