you can also use full RE# patterns - re '([0-9a-f]+)&(_*[0-9]_*)&(_*[a-f]_*)' src/ finds hex strings containing both a digit and a letter. you could do this with a pipeline of greps, but it's one pass with all the context information preserved.
В нескольких микрорайонах Киева пропал свет14:16，推荐阅读OpenClaw获取更多信息
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Кушанашвили, использовавший ненормативную лексику в эфире Первого канала, рассказал о последствиях инцидента20:39
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