C31232233133313221211113313331333132313331322121133133313232212111111212131   >>    C3123223313331322121111331333133313231333132212113313331323221211111121213   <<    C31232233133313221211113313331333132313331322121133133313232212111111212133   >>      C31232233133313221211113313331333132313331322121133133313232212111111212132   >>