#include <cstdio>

int main() {
	
	char first[4];
	char second[4];
	char third[4];
	
	scanf("%s %s %s", first, second, third);
	
	int nodot = ':' + ':' + ':';
	int onedot = ':' + ':' + 'o';
	int twodot = ':' + 'o' + 'o';
	int threedot = 'o' + 'o' + 'o';
	
	int o = 'o';
	int d = ':';
	

	int sumfirst = first[0] + first[1] + first[2];
	int sumsecond = second[0] + second[1] + second[2];
	int sumthird = third[0] + third[1] + third[2];
	
	if (second[1] == 'o'){
		// 1, 3, 5
		if (sumsecond != onedot) {
			printf("unknown");
			// 1
		} else if (sumfirst == nodot && sumthird == nodot) {
			printf("1");
			// 3
		} else if (sumfirst == onedot && sumthird == onedot) {
			if (first[0] == o && third[2] == o) {
				printf("3");
			} else if (first[2] == o && third[0] == o) {
				printf("3");
			} else {
				printf("unknown");
			}
			// 5
		} else if (sumfirst == twodot && sumthird == twodot) {
			if (first[1] == d && third[1] == d) {
				printf("5");
			} else {
				printf("unknown");
			}
		} else {
			printf("unknown");
		}
	} else {
		// 2, 4, 6
		if (sumsecond != nodot) {
			printf("unknown");
			// 6
		} else if (sumfirst == threedot && sumthird == threedot) {
			printf("6");
			// 2
		} else if (sumfirst == onedot && sumthird == onedot) {
			if (first[0] == o && third[2] == o) {
				printf("2");
			} else if (first[2] == o && third[0] == o) {
				printf("2");
			} else {
				printf("unknown");
			}
			// 4
		} else if (sumfirst == twodot && sumthird == twodot) {
			if (first[1] == d && third[1] == d) {
				printf("4");
			} else {
				printf("unknown");
			}
		} else {
			printf("unknown");
		}
	}
	
	printf("\n");
		
	
	return 0;
}