C111123313121111121111331333133313331333133313331333133313331333223312311   >>    C11112331312111112111133133313331333133313331333133313331333133322331231   <<    C111123313121111121111331333133313331333133313331333133313331333223312313   >>      C111123313121111121111331333133313331333133313331333133313331333223312312   >>