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iOS

Multiple arrays in .isSuperSetOf()

I am new to programming and swift and am wondering if there is a more concise way to use the a.isSuperSetOf() to compare the prefix 'a' to many different arrays within the brackets without having to just repeat it a number of times.

In the end I would like it to return those which are sub sets and ignore those which are not. If anyone could lend a hand in this it would be massively appreciated.