C111123313121111121111331333133313331323232133313331333131123312112121   >>    C11112331312111112111133133313331333132323213331333133313112331211212   <<    C111123313121111121111331333133313331323232133313331333131123312112123   >>      C111123313121111121111331333133313331323232133313331333131123312112122   >>