$NS\ =\ LS?$  

 $KS=MS?$  

 $\angle LNM=\angle NLK?$  

 $\angle NKL=\angle NML?$  

 $KS\ =\ NS?$  

 $NK\parallel SM?$  

 $\angle NKS\ne\angle KNS?$  

 $\angle KSL=\angle MSN?$  

 $KM\ne NL?$  

 $NL=KM?$  

 $\angle MKL=\angle KML?$