C11112331312111112111133133313331333132322121111331123231333121323221   >>    C1111233131211111211113313331333133313232212111133112323133312132322   <<    C11112331312111112111133133313331333132322121111331123231333121323223   >>      C11112331312111112111133133313331333132322121111331123231333121323222   >>