B3311331313231311331322331333132233131133132233133313231323223332321   >>    B331133131323131133132233133313223313113313223313331323132322333232   <<    B3311331313231311331322331333132233131133132233133313231323223332323   >>      B3311331313231311331322331333132233131133132233133313231323223332322   >>