-let rec sns3 (c: C) (ts: TList) on ts: Prop \def match ts with [TNil
-\Rightarrow True | (TCons t ts0) \Rightarrow (let TMP_1 \def (sn3 c t) in
-(let TMP_2 \def (sns3 c ts0) in (land TMP_1 TMP_2)))].
+rec definition sns3 (c: C) (ts: TList) on ts: Prop \def match ts with [TNil
+\Rightarrow True | (TCons t ts0) \Rightarrow (land (sn3 c t) (sns3 c ts0))].