Stairs may be gone.Logical formLearned from11 sentences. A person may get stairs.Logical formLearned from11 sentences. A male may point to stairs.Logical formLearned from11 sentences. Persons may ascend stairs.Logical formLearned from11 sentences. A male may get to a bottom of stairs.Logical formLearned from11 sentences. (Basement stairs) may pertain-to a female.Logical formLearned from11 sentences. A fight can be on stairs.Logical formLearned from11 sentences. Stairs may pertain-to a school.Logical formLearned from11 sentences. A snap of a (safety catch) may follow_up a male stairs.Logical formLearned from11 sentences. Stairs can be blue.Logical formLearned from11 sentences. Stairs can be to an apartment.Logical formLearned from11 sentences. A person may crawl_up stairs.Logical formLearned from11 sentences. A female may start_up stairs.Logical formLearned from11 sentences. A person may roll_down stairs.Logical formLearned from11 sentences. Stairs can be secret.Logical formLearned from11 sentences.