B3311331313231311331322331333132313331323131323223313223313231323221311211   >>    B331133131323131133132233133313231333132313132322331322331323132322131121   <<    B3311331313231311331322331333132313331323131323223313223313231323221311213   >>      B3311331313231311331322331333132313331323131323223313223313231323221311212   >>