C111123313121111121111331333133313331323232133313331333131123313233313223221   >>    C11112331312111112111133133313331333132323213331333133313112331323331322322   <<    C111123313121111121111331333133313331323232133313331333131123313233313223223   >>      C111123313121111121111331333133313331323232133313331333131123313233313223222   >>