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, 19, ['8323', '5347', '9627', 't', '2343', '2633', 'Z', '2899', '781', 'X', '2317', '2429', '4079', '4529', 'B', '1343', '6015', '599', '3699', 'C']

242940794529B134360155993699