17 lines
192 B
Plaintext
17 lines
192 B
Plaintext
path(a, a).
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path(a, d).
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path(a, c).
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path(a, b).
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path(b, b).
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path(b, a).
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path(b, d).
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path(b, c).
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path(c, c).
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path(c, b).
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path(c, a).
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path(c, d).
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path(d, d).
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path(d, c).
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path(d, b).
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path(d, a).
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