C11112331312111112111133133313331333132112312111111331322322121   >>    C1111233131211111211113313331333133313211231211111133132232212   <<    C11112331312111112111133133313331333132112312111111331322322123   >>      C11112331312111112111133133313331333132112312111111331322322122   >>