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, 20, ['7431', 'T', 'o', 'g', 'R', '5583', '9545', '1415', 'A', '873', '6047', 'c', '5165', '7075', 'V', 'c', '3545', '1299', 'i', 'o', 'k']

oi12993545cV70755165c6047873A141595455583Rg