C11112331312111112111133133313331333132322121111331322132131121   >>    C1111233131211111211113313331333133313232212111133132213213112   <<    C11112331312111112111133133313331333132322121111331322132131123   >>      C11112331312111112111133133313331333132322121111331322132131122   >>