\Rightarrow (match n0 with [O \Rightarrow (ASort O (next g n)) | (S h)
\Rightarrow (ASort h n)]) | (AHead a1 a2) \Rightarrow (AHead a1 (asucc g
a2))].
\Rightarrow (match n0 with [O \Rightarrow (ASort O (next g n)) | (S h)
\Rightarrow (ASort h n)]) | (AHead a1 a2) \Rightarrow (AHead a1 (asucc g
a2))].