Feet can be on a stair.Logical formLearned from3 sentences. A male may tread_up stairs.Logical formLearned from3 sentences. A male may snuck_up stairs.Logical formLearned from3 sentences. A female may take stairs with nights.Logical formLearned from3 sentences. A person may see a flight of stairs.Logical formLearned from3 sentences. Stairs may kill a person.Logical formLearned from3 sentences. A flight of stairs can be narrow.Logical formLearned from3 sentences. A person may jump_off stairs.Logical formLearned from3 sentences. A female may walk_up stairs.Logical formLearned from3 sentences. A person may climb_up stairs to an apartment.Logical formLearned from3 sentences. Stairs may get a person.Logical formLearned from3 sentences. Stairs can be dreaded.Logical formLearned from3 sentences. A female can be at stairs.Logical formLearned from3 sentences. A door can be by stairs.Logical formLearned from3 sentences. A person may puff from stairs.Logical formLearned from3 sentences.