#!/usr/bin/awk -f 
{ 
  max=5;
  app=" "$2;
  for (i=0; i<max; i++) {
    q[i]=q[i+1] app;
    count[q[i]]++;
  }
  q[max]=$2;
  count[$2]++;
  n++;
}
END {
  for (i in count)
    print count[i]"	"i;
  print n "	NEXTS";
}