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combination; assortment; set
matching (in a contest); pairing
combination
色の組合わせを工夫すると見栄えがいい。
Thoughtful color combinations improve the appearance.
料理の組合わせを毎日考えるのは大変だ。
It's hard to think up meal combinations every day.
番号の組合わせを忘れて金庫が開かない。
I forgot the combination and can't open the safe.