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: 2, 18, ['6375', 'S', '5025', '7611', '8969', 'D', '8023', '3971', '6639', '5143', 'U', '7733', '6245', 'U', 't', 'x', '17', 't', 'V', '1923', 'V', '1427', '9613', 'b', '733', 'x', 'o']

S502576118969D8023397166395143U77336245Utx17t