=ArrayFormula(IF(ISBLANK(Input!$B4:$B),"",(INDEX(Input!A4:A, SMALL(IF(COUNTIF($A$3,Input!$B4:$B), MATCH(ROW(Input!$B4:$B), ROW(Input!$B4:$B)), ""), ROWS(A6)), COLUMNS(Input!B4:B)))))
The result is the first record repeated 3 time:
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Google Sheets Array formula
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