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: 4, 27, ['W', '995', 'j', 'm', 'C', 'M', 'g', 'i', 'D', 'w', '7815', 'l', 'M', 'q', '5347', 'Y', '4197', 'p', '1609', 'X', '4675', 'K', 't', 'b', 'R', 'C', '4267', 'Y', 'R', '1999']

4267CRbtK4675X1609p4197Y5347qMl7815wDigMCm