A male may leap_up stairs.Logical formLearned from3 sentences. Some companions may be stranded on stairs.Logical formLearned from3 sentences. A male may walk to stairs.Logical formLearned from3 sentences. A male may stare_up stairs.Logical formLearned from3 sentences. (Wood stairs) can be hard.Logical formLearned from3 sentences. A male may bounce_up stairs with a luggage.Logical formLearned from3 sentences. A female may creep_up stairs.Logical formLearned from3 sentences. A stair can be nice.Logical formLearned from3 sentences. Some persons may head for stairs.Logical formLearned from3 sentences. Stairs can be a killer.Logical formLearned from3 sentences. A door may lead to stairs.Logical formLearned from3 sentences. A female may look at stairs.Logical formLearned from3 sentences. (Night lights) may light_up stairs.Logical formLearned from3 sentences. Stairs can be a death of a male.Logical formLearned from3 sentences. A person can be big on stairs.Logical formLearned from3 sentences.