22 lines
175 B
PHP
22 lines
175 B
PHP
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POWER SET of []
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POWER SET of [singleton]
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(empty)
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singleton
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POWER SET of [dog, c, b, a]
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(empty)
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a
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b
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a b
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c
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a c
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b c
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a b c
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dog
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a dog
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b dog
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a b dog
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c dog
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a c dog
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b c dog
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a b c dog
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