B3311331313231311331322331333132322331311113313231323223313222311   >>    B331133131323131133132233133313232233131111331323132322331322231   <<    B3311331313231311331322331333132322331311113313231323223313222313   >>      B3311331313231311331322331333132322331311113313231323223313222312   >>