#include<stdio.h>
int main()
{
int month[6],day[6],year[6];
int i;
for(i=0;i<6;i++)
{
scanf("%d/%d/%d",&month[i],&day[i],&year[i]);
}
for(i=0;i<6;i++)
{
for(int j=0;j<6;j++)
{
if(year[i]<year[j])
{
printf("%d/%d/%d\n",month[i],day[i],year[i]);
break;
}
else if (month[i]<month[j])
{
printf("%d/%d/%d\n",month[i],day[i],year[i]);
break;
}
else
{
printf("%d/%d/%d\n",month[i],day[i],year[i]);
break;
}
}
}
}