#include <stdio.h>

int main()
{
char c,p1[3],p2[3],p3[3];
int i=0;
while (c!='\n')
{
    c=getchar();
    p1[i]=c;
    i++;
}
i=0;
c='p';
while (c!='\n')
{
    c=getchar();
    p2[i]=c;
    i++;
}
i=0;
c='p';
while (c!='\n')
{
    c=getchar();
    p3[i]=c;
    i++;
}

if ((p2[2]=='o')&&(p1[1]==':')&&(p1[2]==':')&&(p1[0]==':')&&(p2[0]==':')&&(p2[2]==':')&&(p3[0]==':')&&(p3[1]==':')&&(p3[2]==':'))
printf("1\n");      //1
else if
 ((p1[0]=='o')&&(p1[1]==':')&&(p1[2]==':')&&(p2[0]==':')&&(p2[1]==':')&&(p2[2]==':')&&(p3[0]==':')&&(p3[1]==':')&&(p3[2]=='o'))
printf("2\n");
else if
 ((p1[0]==':')&&(p1[1]==':')&&(p1[2]=='o')&&(p2[0]==':')&&(p2[1]==':')&&(p2[2]==':')&&(p3[0]=='o')&&(p3[1]==':')&&(p3[2]==':'))
printf("2\n");
else if
 ((p1[0]=='o')&&(p1[1]==':')&&(p1[2]==':')&&(p2[0]==':')&&(p2[1]=='o')&&(p2[2]==':')&&(p3[0]==':')&&(p3[1]==':')&&(p3[2]=='o'))
printf("3\n");
else if
 ((p1[0]==':')&&(p1[1]==':')&&(p1[2]=='o')&&(p2[0]==':')&&(p2[1]=='o')&&(p2[2]==':')&&(p3[0]=='o')&&(p3[1]==':')&&(p3[2]==':'))
printf("3\n");
else if
 ((p1[0]=='o')&&(p1[1]==':')&&(p1[2]=='o')&&(p2[0]==':')&&(p2[1]==':')&&(p2[2]==':')&&(p3[0]=='o')&&(p3[1]==':')&&(p3[2]=='o'))
printf("4\n");
else if
 ((p1[0]=='o')&&(p1[1]==':')&&(p1[2]=='o')&&(p2[0]==':')&&(p2[1]=='o')&&(p2[2]==':')&&(p3[0]=='o')&&(p3[1]==':')&&(p3[2]=='o'))
printf("5\n");
else if
 ((p1[0]=='o')&&(p1[1]=='o')&&(p1[2]=='o')&&(p2[0]==':')&&(p2[1]==':')&&(p2[2]==':')&&(p3[0]=='o')&&(p3[1]=='o')&&(p3[2]=='o'))
printf("6\n");
else if
 ((p1[0]=='o')&&(p1[1]==':')&&(p1[2]=='o')&&(p2[0]=='o')&&(p2[1]==':')&&(p2[2]=='o')&&(p3[0]=='o')&&(p3[1]==':')&&(p3[2]=='o'))
printf("6\n");
else printf("unknown\n");
    return 0;
}