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Candace Philip and also Foster.
Cara has deep affection for Finn, and also Foster.
Phineas has won the affection of Cara, and also Frank.
Candy revels in being with Phineas and Ferb.
Phineas is cherished by Candy, and Ferb.
Candace has a deep connection with both Finn and Frank.
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Phineas and Ferb Get Busted Wikipedia