#include <string>
#include <iostream>

typedef struct dice {
	std::string state[3];
	unsigned short int val;
} dice;

int main() {
	std::string input[3];
	dice states[] = {	{":::",":o:",":::", 1}, {"o::",":::", "::o", 2},
										{"::o",":::","o::", 2}, {"o::",":o:", "::o", 3},
										{"::o",":o:", "o::", 3}, {"o:o",":::", "o:o", 4},
										{"o:o",":o:", "o:o", 5}, {"ooo",":::", "ooo", 6},
										{"o:o","o:o", "o:o", 6}};
	std::cin >> input[0] >> input[1] >> input[2];

	for (unsigned short int i = 0; i < (sizeof(states)/sizeof(dice)); i++) {
		if (input[0] == states[i].state[0] &&
				input[1] == states[i].state[1] &&
				input[2] == states[i].state[2]) {
			std::cout << states[i].val << std::endl;
			return 0;
		}	
	}

	std::cout << "unknown\n";
	return 0;
}