C11112331312111112111133133313231333132313331333121111133313232231   >>    C1111233131211111211113313331323133313231333133312111113331323223   <<    C11112331312111112111133133313231333132313331333121111133313232233   >>      C11112331312111112111133133313231333132313331333121111133313232232   >>