C13223313311212111133133313331333133313233121333133313331311312111113223231231   >>    C1322331331121211113313331333133313331323312133313331333131131211111322323123   <<    C13223313311212111133133313331333133313233121333133313331311312111113223231233   >>      C13223313311212111133133313331333133313233121333133313331311312111113223231232   >>