B3311331313231311331322331333132313132313331323223313133313331323132233131231   >>    B331133131323131133132233133313231313231333132322331313331333132313223313123   <<    B3311331313231311331322331333132313132313331323223313133313331323132233131233   >>      B3311331313231311331322331333132313132313331323223313133313331323132233131232   >>