#include <iostream>
using namespace std;
 
int main() {
	// your code goes here
	int t;
	cin>>t;
	while(t--)
	{
		int n,k;
		cin>>n>>k;
		int a[n],s=0;
		for(int i=0;i<n;i++)
		{
			cin>>a[i];
			s=s+a[i];
		}
		int x=s/k;
		int c=a[0],i;
		cout<<a[0]<<" ";
		s=0;
		for(i=1;i<n;i++)
		{
			c=c+a[i];
			if(c>x)
			{
				cout<<" / "<<a[i]<<" ";
				c=a[i];
				s++;
			}
			else
			{
				cout<<a[i]<<" ";
			}
			if(s==k-1)
				break;
		}
		i=i+1;
		while(i<n)
			cout<<a[i++]<<" ";
		cout<<endl;
	}
	return 0;
}

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