C11112331312111112111133133313331333132112312111113231333132211111   >>    C1111233131211111211113313331333133313211231211111323133313221111   <<    C11112331312111112111133133313331333132112312111113231333132211113   >>      C11112331312111112111133133313331333132112312111113231333132211112   >>