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: 14, 19, ['f', '6709', '1771', '3699', 'i', '4507', 'm', '7793', '4271', 'T', 'h', 'P', 'Z', '8907', 'i', '2171', 'W', '4259', 'K']

8907i2171W4259K