#include<bits/stdc++.h>
include
#include<math.h>
using namespace std;
int main() {
// your code goes here
int t;
cin>>t;
while(t–){
int n,q;
cin>>n>>q;
string s;
cin>>s;
for(int i=0; i<=q; i++){
int m=-2147483647;
int cnt=1;
for(int i=0; i<s.length()-1; i++){
if(s[i]==s[i+1]){
cnt++;
}else{
cnt=1;
}
m=max(m,cnt);
}
cout<<m<<" ";
if(i<q){
char add;
cin>>add;
s=s+add;
}
}
cout<<endl;
}
return 0;
}