1 gelload "a","a.png":x%=-90
2 gelload "b","b.png":k%=0
3 spritemove "a",x%,150:sleep 15
4 x%=x%+1:k%=k%+1
5 if k%=1 then spritegel "a","b" 
6 if k%>1 then k%=0
7 goto 3