C132233133112121111331333133313231333133313231323221211111212131   >>    C13223313311212111133133313331323133313331323132322121111121213   <<    C132233133112121111331333133313231333133313231323221211111212133   >>      C132233133112121111331333133313231333133313231323221211111212132   >>