C31232233133313221211113313331333133313331212111133121111121111123231121   >>    C3123223313331322121111331333133313331333121211113312111112111112323112   <<    C31232233133313221211113313331333133313331212111133121111121111123231123   >>      C31232233133313221211113313331333133313331212111133121111121111123231122   >>