#include <iostream>
#include <string>
using namespace std;

void vypis(string a);
string ziskej(short cislo, short radek);
void nacti(string a);
void parsuj();
string a;
string buffer[7];
string poznej(string cif[7]);

int main() {

	getline(cin,a);
	while(a!="end") {
		nacti(a);
		getline(cin,a);
	}
cout << "end" << endl;
return 0;
}

string ziskej(short cislo, short radek) {
string nula[7] = {"+---+","|   |","|   |","+   +","|   |","|   |","+---+"};
string jedna[7] = {"    +","    |","    |","    +","    |","    |","    +"};
string dva[7] = {"+---+","    |","    |","+---+","|    ","|    ","+---+"};
string tri[7] = {"+---+","    |","    |","+---+","    |","    |","+---+"};
string ctyri[7] = {"+   +","|   |","|   |","+---+","    |","    |","    +"};
string pet[7] = {"+---+","|    ","|    ","+---+","    |","    |","+---+"};
string sest[7] = {"+---+","|    ","|    ","+---+","|   |","|   |","+---+"};
string sedm[7] = {"+---+","    |","    |","    +","    |","    |","    +"};
string osm[7] = {"+---+","|   |","|   |","+---+","|   |","|   |","+---+"};
string devet[7] = {"+---+","|   |","|   |","+---+","    |","    |","+---+"};
switch( cislo ) {
	case 0: return nula[radek]; break;
	case 1: return jedna[radek]; break;
	case 2: return dva[radek]; break;
	case 3: return tri[radek]; break;	
	case 4: return ctyri[radek]; break;
	case 5: return pet[radek]; break;
	case 6: return sest[radek]; break;
	case 7: return sedm[radek]; break;
	case 8: return osm[radek]; break;
	case 9: return devet[radek]; break;
   }
return "";
}



void nacti(string a) {
buffer[0]=a;
for(int i = 1; i<7; i++){
getline(cin,a);
buffer[i]=a;
}
getline(cin,a);
getline(cin,a);
parsuj();
}

string poznej(string cif[7]) {
string res = "";
// prochazeni vsech cifernula[radek];
for(int i = 0; i <10 ; i++){
//prochazeni radku
	for(int j=0;j < 7; j++) {
		string temp = ziskej(i,j);
//prochazeni znaku
		for(int k=0;k< 5;k++) {
			if(cif[j][k] == '.') continue;
			if(cif[j][k] != temp[k]) goto navesti;	
		}
	}
	res += (i+48);
	navesti: continue;
}
return res;
}

unsigned int chtoi(char cislo) {
switch( cislo ) {
	case '0': return 0; break;
	case '1': return 1; break;
	case '2': return 2; break;
	case '3': return 3; break;	
	case '4': return 4; break;
	case '5': return 5; break;
	case '6': return 6; break;
	case '7': return 7; break;
	case '8': return 8; break;
	case '9': return 9; break;
   }
return 10;
}

void parsuj() {
string cif[4][7];
string res[4];
int hodiny,minuty;
string hod, min;
short poceth = 0,pocetm = 0;
for(int i = 0; i <7 ; i++) {
cif[0][i]=buffer[i].substr(0,5);
cif[1][i]=buffer[i].substr(7,5);
cif[2][i]=buffer[i].substr(17,5);
cif[3][i]=buffer[i].substr(24,5);
}
for(int i = 0; i < 4; i++) {
res[i]=poznej(cif[i]);
}
for(unsigned int i = 0; i <res[0].length();i++){
hodiny=chtoi(res[0][i])*10;
if(hodiny>20) continue;
for(unsigned int j = 0; j < res[1].length();j++){
hodiny+=chtoi(res[1][j]);
if(hodiny<24) { poceth++; hod=res[0][i]; hod+=res[1][j]; }
}
}

for(unsigned int i = 0; i < 4; i++) {
res[i]=poznej(cif[i]);
}
for(unsigned int i = 0; i <res[0].length();i++){
minuty=chtoi(res[2][i])*10;
if(minuty>50) continue;
for(unsigned int j = 0; j < res[1].length();j++){
minuty+=chtoi(res[3][j]);
if(minuty<60) { pocetm++; min=res[2][i]; min+=res[3][j]; }
}
}
if(poceth==1 && pocetm==1) cout<< hod << ":" << min << endl;
else cout<<"ambiguous"<< endl;

}