B331133131323131133132233133313233313133313223313331323223313232213121   >>    B33113313132313113313223313331323331313331322331333132322331323221312   <<    B331133131323131133132233133313233313133313223313331323223313232213123   >>      B331133131323131133132233133313233313133313223313331323223313232213122   >>