6 lines
129 B
Plaintext
6 lines
129 B
Plaintext
left(1,a). left(1,b). right(1,c).
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left(2,b). left(2,c). right(2,d).
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left(3,a). left(3,b). left(3,e). right(3,f).
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set(a).
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set(b).
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