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.

Input: Consider Input: 2, 9, ['g', '309', 'x', '3537', '5995', 'K', '6951', 'x', 'b', '3171', '9079', '7597']

Output: bx1596K59957353x903


Input: Consider Input: 9, 16, ['E', 'M', '361', '4657', '8215', '8495', '73', 'O', '1949', '8617', '7963', 'B', '4393', 'b', '5085', '1535', 'A', 't', '4831', 'v', '9665', 'Z', '7017', '4449', 'Z', 'd', 'Q', '3879', 'J', 'y']

Output: 53515805b3934B369771689491


Input: Consider Input: 2, 15, ['8215', 'F', 'r', '2505', 'i', 'I', 't', 'h', 't', '9889', '8849', '7085', 'R', 'I', 'O', '841', '2493', '5017', 'K', 'V', 'M', '6785']


Output: OIR580794889889thtIi5052rF