TASK 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.
PROBLEM: 1, 2, ['M', 'G', '8763', '6617', 's', 't']

SOLUTION: MG

PROBLEM: 12, 20, ['e', '103', '5289', 'u', 'J', 'Z', 'n', '3135', '9139', '3517', '8931', 'd', '3055', 'T', 'l', '7499', '4177', 'n', '7127', 'v', 'd', 'Z', '6119', 'S', 'Y', 'w', 's', '9765', '2861', 'P']

SOLUTION: d3055Tl74994177n7127v

PROBLEM: 11, 12, ['R', '3025', 'l', '3911', 'H', 'W', '6381', '6447', 'l', 's', 'r', '3649', '4227', 'k']

SOLUTION:
r3649