C11112331312111112111133133313331333132323213331333133312111133132313121111   >>    C1111233131211111211113313331333133313232321333133313331211113313231312111   <<    C11112331312111112111133133313331333132323213331333133312111133132313121113   >>      C11112331312111112111133133313331333132323213331333133312111133132313121112   >>