B3311331313231311331322331333132313231333133313311211113313231232313232233211   >>    B331133131323131133132233133313231323133313331331121111331323123231323223321   <<    B3311331313231311331322331333132313231333133313311211113313231232313232233213   >>      B3311331313231311331322331333132313231333133313311211113313231232313232233212   >>