#include <stdio.h>
int main(void){
	char ans[26] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'};
	
	char str[26];
	scanf("%s",str);
	
	for(int i = 0;i < 26;i ++){
		if(ans[i] != str[i]){
			printf("%cto%c",ans[i],str[i]);
		}
	}
}