S1N1O1W4M3O1B3I1L1E1S1
18 points
SNOWMOBILES is validvalid
SNOWMOBILE, [v SNOWMOBILED, SNOWMOBILES, SNOWMOBILING] : SNOWMOBILER [v]
SNOWMOBILE, to travel by any of various automotive vehicles for travel on snow [v]
SNOWMOBILE, [v SNOWMOBILED, SNOWMOBILES, SNOWMOBILING] : SNOWMOBILER [v]
SNOWMOBILE, to travel by any of various automotive vehicles for travel on snow [v]