B3311331313231311331322331333132233131133132233133313231323123221   >>    B331133131323131133132233133313223313113313223313331323132312322   <<    B3311331313231311331322331333132233131133132233133313231323123223   >>      B3311331313231311331322331333132233131133132233133313231323123222   >>