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: 6, 11, ['5155', '2959', '1285', 'C', 'n', '2035', '9839', '8951', 'X', '2133', 't', 's', 'I', '5999', '7963', 'Q', '221', '1045']

203598398951X2133t