#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>

#include <string.h>

int main()

{

	char head[15];

	char message[150];

	char tail[15];

	int i = 0;

	for (;;)

	{

		gets(head);

		if (strcmp(head, "START") == 0){

			gets(message);

			for (i = 0; message[i] != '\0'; i++){

				if (message[i] >= 'F' && message[i] <= 'Z'){

					message[i] = message[i] - 5;

				}

				else if (message[i] >= 'A' && message[i] <= 'E'){

					message[i] = message[i] + 21;

				}

			}

			gets(tail);

			if (strcmp(tail, "END") == 0 ){

				printf("%s\n", message);

			}

		}

		else if (strcmp(head, "ENDOFINPUT") == 0)

			break;

	}

	return 0;

}