This quartet of space explorers will undertake a 685,000-mile, ten-day orbital path around the moon, commonly referred to as a lunar circumnavigation.
Derivation tree: visual DAG of all reduction paths, with branch/merge tracking
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When constructing some literal string to match within a regular expression, it is important to escape special regular expression characters like *, +, ?, (, ), etc.
pending := tasks.filter(fn(t: Task) - bool { !t.done });