B3311331313231311331322331333132333133313223312111133132313231231211   >>    B331133131323131133132233133313233313331322331211113313231323123121   <<    B3311331313231311331322331333132333133313223312111133132313231231213   >>      B3311331313231311331322331333132333133313223312111133132313231231212   >>