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: 3, 9, ['Y', 'V', 'm', 'X', 'G', 'C', 'M', '3129', 'R', 'P', 'u', 'z', 'W', 'S', 'n', 'R', '3873', '9439', '3497', '8877', '215', '9025', '2699', 'T', 'V', '7873']

mXGCM3129R