C31232233133313221211113313331333133313331212111133131311311211   >>    C3123223313331322121111331333133313331333121211113313131131121   <<    C31232233133313221211113313331333133313331212111133131311311213   >>      C31232233133313221211113313331333133313331212111133131311311212   >>