C312312111111331312111133133313331322331333133313331322231121211   >>    C31231211111133131211113313331333132233133313331333132223112121   <<    C312312111111331312111133133313331322331333133313331322231121213   >>      C312312111111331312111133133313331322331333133313331322231121212   >>