n common cubic dice are thrown. What is the probability that the sum of all the thrown dice is at least x?

Input starts with an integer T (≤ 200), denoting the number of test cases.

Each test case contains two integers n (1 ≤ n < 25) and x (0 ≤ x < 150). The meaning of n and x are given in the problem statement.

For each case, output the case number and the probability in p/q form where p and q are relatively prime. If q equals 1 then print p only.