C312312111111331312111133133313331333131331123313331323232133311   >>    C31231211111133131211113313331333133313133112331333132323213331   <<    C312312111111331312111133133313331333131331123313331323232133313   >>      C312312111111331312111133133313331333131331123313331323232133312   >>