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 concatenate all elements of A from the ith element to the jth element, and print 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.
Input: 7, 26, ['X', '5589', '83', 't', 'k', 'D', 'L', '4157', '9719', '5771', 'r', '835', 'n', '9085', '9899', 'u', '8837', '599', 'd', 'n', '697', '8493', 't', '7909', '5579', 'U']

L415797195771r835n90859899u8837599dn6978493t79095579U