what substrings does the regex (a|ab)+ match in the following input?
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在头部医院的示范效应下，全国具备开展植入式人工心脏手术资质的医院，已经从个位数狂飙至2025年8月的219家。目前，核心医疗已成功覆盖了国内超120家终端医院。，推荐阅读谷歌浏览器下载获取更多信息
Отвергнутый влюбленный поджег себя14:50。爱思助手对此有专业解读
对于尾部玩家，内存价格暴涨让新机迭代失去盈利可能，虽然魅族国内手机新产品自研硬件项目是深思熟虑的选择，而非业务停摆，却也能看出，尾部厂商的艰难生存状况。