2. 0<n
3. k :
4. c :
n
k
5. p :
k( List)
6. sum(||p(j)|| | j < k) = n-1
7.
j:k, x,y:||p(j)||. x<y 
(p(j))[x]>(p(j))[y]
8.
j:k, x:||p(j)||. (p(j))[x]<n-1 & c((p(j))[x]) = j
9. sum(if c(n-1)=
x
1 else 0 fi | x < k) = if c(n-1)=c(n-1) 1 else 0 fi
sum(if c(n-1)=j 1 else 0 fi | j < k) = 1
