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.

Example Input: 2, 3, ['2661', 'T', '8855', 'I', 'f', 'P']
Example Output: 5588T

Example Input: 4, 6, ['w', '8785', '2921', 'J', 'P', 'g', '9273', '5439', 'O', 'F', 'u', '967', '9007']
Example Output: gPJ

Example Input: 3, 7, ['U', 'h', '7923', '9767', 'T', '4777', '5311', '7951', '4461', '1113', '4627', '1611', 'T', 'U', '153', 'y', '4297', 'D']
Example Output:
11357774T76793297