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: 12, 14, ['7369', '2893', '243', '8723', 'y', '3979', '3573', 'h', 'h', '7467', '611', '2137', 'v', '3549', '2921', 'd', '2113', '5859', 'x']

2137v3549