#include<iostream>
using namespace std;
int map[4][4];
int change[16];
int save[16];
int leastchange;
int nopen;
void turn(int n,int m)
{
	int i;
	for(i=0;i<4;i++)
	{
		if(map[i][m]==1) nopen--;
			else nopen++;
		map[i][m]=1-map[i][m];
	}
	for(i=0;i<4;i++)
	{
		if(map[n][i]==1) nopen--;
			else nopen++;
		map[n][i]=1-map[n][i];		
	}
	if(map[n][m]==1) nopen--;
	else nopen++;
	map[n][m]=1-map[n][m];
}
void backstract(int n,int tc)
{
	if(nopen==16&&tc<leastchange)
	{leastchange=tc;for(int i=0;i<16;i++) save[i]=change[i];}
	if(n>15) return;
	if(tc+1<leastchange)
	{
		turn(n/4,n%4);
		change[n]=1;
		backstract(n+1,tc+1);
		turn(n/4,n%4);
		change[n]=0;
	}
	backstract(n+1,tc);
}
int main()
{
	int i,j;
	char a;
	nopen=0;
	leastchange=16;
	for(i=0;i<16;i++) change[i]=0;
	for(i=0;i<16;i++) save[i]=1;
	for(i=0;i<4;i++)
	for(j=0;j<4;j++)
	{
		cin>>a;
		if(a=='-') {map[i][j]=1;nopen++;}
		else map[i][j]=0;
	}
	backstract(0,0);
	cout<<leastchange<<endl;
	for(i=0;i<16;i++)
	if(save[i])
		cout<<i/4+1<<" "<<i%4+1<<endl;
	return 1;
}