C31232233133313221211113313331333132313331333133313331333133313331333233212321   >>    C3123223313331322121111331333133313231333133313331333133313331333133323321232   <<    C31232233133313221211113313331333132313331333133313331333133313331333233212323   >>      C31232233133313221211113313331333132313331333133313331333133313331333233212322   >>