#include<stdio.h>
int main()
{
	int T,N,Z,L,R,mid,temp;
	scanf("%d",&T);
	while(T--)
	{
		scanf("%d %d %d",&L,&R,&N);
		temp=R-L;
		int count=1;
		/*if(temp==1)
		{
			printf("0 0\n1\n");
			continue;
		}*/
		while(temp>=1 && !(L==N && R==N))
		{
			count++;
			printf("%d %d\n",L,R);
			mid=(L+R)/2;
			if(mid>=N)
			{
				R=mid;
				temp=mid-L;
			}
			else
			{
				L=mid+1;
				temp=R-mid-1;
			}
		}
		printf("%d %d\n",L,R);
		printf("%d\n",count);
	}
	return 0;
}

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MwowIDQgMwo3IDE1IDE0CjEgMTYgOQo=

3
0 4 3
7 15 14
1 16 9