C312312111111331312111133133313331322331333133313121111331333132112111   >>    C31231211111133131211113313331333132233133313331312111133133313211211   <<    C312312111111331312111133133313331322331333133313121111331333132112113   >>      C312312111111331312111133133313331322331333133313121111331333132112112   >>