C31232233133313221211113313331333133313331212111112113313113313231   >>    C3123223313331322121111331333133313331333121211111211331311331323   <<    C31232233133313221211113313331333133313331212111112113313113313233   >>      C31232233133313221211113313331333133313331212111112113313113313232   >>