#include <cstdio>
#include <cstring>

char l[][51]={"+---+    ++---++---++   ++---++---++---++---++---+",
"|   |    |    |    ||   ||    |        ||   ||   |",
"|   |    |    |    ||   ||    |        ||   ||   |",
"+   +    ++---++---++---++---++---+    ++---++---+",
"|   |    ||        |    |    ||   |    ||   |    |",
"|   |    ||        |    |    ||   |    ||   |    |",
"+---+    ++---++---+    ++---++---+    ++---++---+"};

int main()
{
	while(1)
	{
		char buf[9][100];
		char buf2[9][100];
//		scanf("%s", buf);
		gets(buf[0]);
		if(buf[0][0]=='e'){
			 printf("end\n");
			 break;
		}
		for(int i = 1; i < 9; i++)
			gets(buf[i]);
		//int h, m;
		bool g;
		int co = 0;
		int hsol, msol;
//		printf("zva\n");
		for(int h = 0; h < 24; h++)
		{
			for(int m = 0; m < 60; m++)
			{
				g = true;
				for(int i = 0; i < 7; i++)
				{
					buf2[i][0]=0;
					int a = h/10;
//					printf("wtf %d %d %d\n", h, m, i);
					for(int j = a*5; j < (a+1)*5; j++)
						sprintf(buf2[i]+strlen(buf2[i]), "%c", l[i][j]);
					sprintf(buf2[i]+strlen(buf2[i]),"  ");
//					printf("zva\n");
					a = h%10;
					for(int j = a*5; j < (a+1)*5; j++)
						sprintf(buf2[i]+strlen(buf2[i]),"%c", l[i][j]);
					if(i==2 || i==4)
					{
						sprintf(buf2[i]+strlen(buf2[i]),"  o  ");
					}
					else
						sprintf(buf2[i]+strlen(buf2[i]),"     ");
					a = m/10;
					for(int j = a*5; j < (a+1)*5; j++)
						sprintf(buf2[i]+strlen(buf2[i]),"%c", l[i][j]);
					sprintf(buf2[i]+strlen(buf2[i]),"  ");
					a = m%10;
					for(int j = a*5; j < (a+1)*5; j++)
						sprintf(buf2[i]+strlen(buf2[i]),"%c", l[i][j]);

//					printf("\n");
				}
				for(int i = 0; i < 7; i++)
				{
					for(int j = 0; j < 29; j++)
						if(buf[i][j]!=buf2[i][j] && buf[i][j]!='.')
							g = false;
				}
				if(g)
				{
					co++; hsol = h; msol=m;
				}
//				printf("\n\n");
			}
		}
		if(co>1)
			printf("ambiguous\n");
		else
			printf("%02d:%02d\n", hsol, msol);
	}
	return 0;
}