MAPARRAY(["2030届","2029届","2028届","2027届","2026届","2025届"],
IF(item == "2030届", MAPARRAY(RANGE(4), item + "班"),
IF(item == "2029届", MAPARRAY(RANGE(6), item + "班"),
IF(item == "2028届", MAPARRAY(RANGE(4), item + "班"),
IF(item == "2027届", MAPARRAY(RANGE(5), item + "班"),
IF(item == "2026届", MAPARRAY(RANGE(5), item + "班"),
IF(item == "2025届", MAPARRAY(RANGE(5), item + "班"), [])))))))
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