TASK DEFINITION: In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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'. Perform the operations in order, i.e., do not reverse first and then concatenate.
PROBLEM: 3, 22, ['5347', 'e', 'a', 'i', 'o', 'W', '3101', '5381', 'u', '8799', 'r', '7559', '9931', 'V', 'l', 'v', 's', 'q', 'C', 'o', '7803', 'c']

SOLUTION: c3087oCqsvlV13999557r9978u18351013Woia

PROBLEM: 3, 10, ['g', '5155', 'p', '6627', 'W', 'q', '2851', 'm', 's', '7781', 'u', '9739']

SOLUTION: 1877sm1582qW7266p

PROBLEM: 3, 23, ['w', '5493', '9015', 'I', 'X', '1535', 'w', '1009', '7001', '7159', '5739', 'g', 'O', '4809', 'e', 'F', '331', '5031', 'R', 'x', '4959', '8491', '2129', 'c', '6647']

SOLUTION:
921219489594xR1305133Fe9084Og9375951710079001w5351XI5109