C31232233133313221211113313331333132313331323331333133313223321   >>    C3123223313331322121111331333133313231333132333133313331322332   <<    C31232233133313221211113313331333132313331323331333133313223323   >>      C31232233133313221211113313331333132313331323331333133313223322   >>