Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 2, 22, ['E', '9437', 'R', 'M', 'p', 'A', '7261', '4163', '8357', '6555', 'I', 'T', '5471', 'G', 'S', '3447', 'C', '5845', 'I', '3817', 'p', '6781']

6781p3817I5845C3447SG5471TI6555835741637261ApMR9437