At: auto2  list  ind 1 1 1 2 1 1 2
1. Alph: Type
2. P: Alph*
Prop
3. n: 
4. 0 < n
5. 
l:Alph*. ||l|| < n-1 
 P(l)
6. (
l:Alph*. ||l|| < n-1 
 P(l)) 
 (
l:Alph*. ||l|| = n-1 
 P(l))
7. l: Alph*
8. ||l|| < n
9. 
||l|| < n-1
 
 P(l)
By: Assert (||l|| = n-1)
Generated subgoals:| 1 |    ||l|| = n-1 | 
| 2 | 10. ||l|| = n-1    P(l) | 
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