B3311331313231311331322331333132313132313331323223313233313231323222212321   >>    B331133131323131133132233133313231313231333132322331323331323132322221232   <<    B3311331313231311331322331333132313132313331323223313233313231323222212323   >>      B3311331313231311331322331333132313132313331323223313233313231323222212322   >>