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.

3, 6, ['p', 'H', '2775', '2567', '7787', 'D', '3807', '4817', '5399']
D787776525772

1, 8, ['9669', '9577', '2831', 'Y', 'y', 'q', 'f', 'b', 'L', 'v', '5545', '7305']
bfqyY138277599669

3, 12, ['6031', '7565', 'e', '4121', 't', 'n', '4139', '6529', '5745', 'v', 'q', '2561', '5253', '7741', 'n', 'a', 'Z', '3131', 'S', 't']

1652qv547592569314nt1214e