2. St: Type
3. q: St
[ < q,nil > ] 
{C:{l:((St
Alph*)*)| ||l|| > 0 }| 
i:
(||C||-1). ||2of(C[i])|| > 0 } Alph,St:Type, q:St. [ < q,[] > ] NComp(Alph;St)| 1 | 1. Alph: Type 2. St: Type 3. q: St [ < q,nil > ] {C:{l:((StAlph*)*)| ||l|| > 0 }| i:(||C||-1). ||2of(C[i])|| > 0 } |
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