C111123313121111121111331333133313331333133313331333133313331311213332211   >>    C11112331312111112111133133313331333133313331333133313331333131121333221   <<    C111123313121111121111331333133313331333133313331333133313331311213332213   >>      C111123313121111121111331333133313331333133313331333133313331311213332212   >>