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.

1, 6, ['7675', '2039', 'u', 'w', '8039', 'e', 'q']
e9308wu93025767

1, 3, ['8015', 'y', 'r', '8077', 'U']
ry5108

3, 15, ['m', 'o', '1011', '6365', 'j', 's', 'h', 'w', '6365', 'P', '1475', '5171', 'H', 'N', '7783', '9541']

3877NH17155741P5636whsj56361101