C13223313311212111133133313331333133313232233133311233132222211   >>    C1322331331121211113313331333133313331323223313331123313222221   <<    C13223313311212111133133313331333133313232233133311233132222213   >>      C13223313311212111133133313331333133313232233133311233132222212   >>