#include <stdio.h>
#define NUM 26

int main()
{
	char box1[NUM];
	char box2[NUM] ="abcdefghijklmnopqrstuvwxyz";

	scanf("%s", &box1[0]);

	for(int i; i < NUM; i++)
	{
		if(box1[i] == box2[i])
		{

		}
		else
		{
			printf("%cto%c\n", box1[i], box2[i]);
		}
	}

	return 0;
}