C31232233133313221211113313331333133313113311331211113313133311   >>    C3123223313331322121111331333133313331311331133121111331313331   <<    C31232233133313221211113313331333133313113311331211113313133313   >>      C31232233133313221211113313331333133313113311331211113313133312   >>