C31232233133313221211113313331333133313113311331333133313113313222313233231   >>    C3123223313331322121111331333133313331311331133133313331311331322231323323   <<    C31232233133313221211113313331333133313113311331333133313113313222313233233   >>      C31232233133313221211113313331333133313113311331333133313113313222313233232   >>