#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>

int main(void) {
	int i;
	char S[10];

	scanf("%s", &S);
	
	for (i = 0; i < 9; i++) {
		if (S[i] == '?')
			break;
	}

	switch (i) {
	case 0:
		printf("y\n");
		break;
	case 1:
		printf("u\n");
		break;
	case 2:
		printf("k\n");
		break;
	case 3:
		printf("i\n");
		break;
	case 4:
		printf("c\n");
		break;
	case 5:
		printf("o\n");
		break;
	case 6:
		printf("d\n");
		break;
	case 7:
		printf("e\n");
		break;
	case 8:
		printf("r\n");
	}

	return 0;
}