Assertion: rerun | /r/HasProperty | aired under multiple alternate names
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text: Very popular series running more than four seasons may start daily reruns of the first seasons, while production and airings continue of the current season's episodes; until approximately the early 1980s, shows that aired in syndication while still in production had the reruns aired under an alternate name (or multiple alternate names, as was the case with Death Valley Days) to differentiate the reruns from the first-run episodes.