B3311331313231311331322331333132313231323331333131211113313232321333132321211   >>    B331133131323131133132233133313231323132333133313121111331323232133313232121   <<    B3311331313231311331322331333132313231323331333131211113313232321333132321213   >>      B3311331313231311331322331333132313231323331333131211113313232321333132321212   >>