C312312111111331312111133133313121111133313113313223313233111221   >>    C31231211111133131211113313331312111113331311331322331323311122   <<    C312312111111331312111133133313121111133313113313223313233111223   >>      C312312111111331312111133133313121111133313113313223313233111222   >>