C312312111111331312111133133313331323331333131211113313223322211   >>    C31231211111133131211113313331333132333133313121111331322332221   <<    C312312111111331312111133133313331323331333131211113313223322213   >>      C312312111111331312111133133313331323331333131211113313223322212   >>