Given two strings S1 and S2, find the number of times the second string occurs in the first string, whether continuous or discontinuous.
The first line of input contains an integer T denoting the number of test cases. Then T test cases follow. The first line of each test case contains integers N and M denoting the length of the strings S1 and S2 respectively.
The second line of each test case contains the strings S1 and S2.
Print the number of times S2 appears in S1, whether continuous or discontinuous. Print the answer for each test case in a new line.
1<= T <=100
1<= N, M <=1000