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2. T List l2:T List. nil l2 ||nil||||l2|| & (i:. i<||nil|| nil[i] = l2[i]) | 1 step |
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2. T List 3. u : T 4. v : T List 5. l2:T List. v l2 ||v||||l2|| & (i:. i<||v|| v[i] = l2[i]) l2:T List. [u / v] l2 ||[u / v]||||l2|| & (i:. i<||[u / v]|| [u / v][i] = l2[i]) | 17 steps |
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