Babies may fall_down stairs.Logical formLearned from3 sentences. Stairs may be damaged.Logical formLearned from3 sentences. A male may dash_down stairs to a female.Logical formLearned from3 sentences. (Stone stairs) can be narrow.Logical formLearned from3 sentences. A slip can be on stairs.Logical formLearned from3 sentences. Stairs may lead to a courtyard.Logical formLearned from3 sentences. A person may slide_down stairs.Logical formLearned from3 sentences. Stairs can be oaken.Logical formLearned from3 sentences. A (stair hall) can be circular.Logical formLearned from3 sentences. Some monsters may hound persons to a foot of stairs.Logical formLearned from3 sentences. A flight of stairs may end in a passage of some length.Logical formLearned from3 sentences. Steps can be upon a stair.Logical formLearned from3 sentences. A step may be heard on a stair.Logical formLearned from3 sentences. A rustle can be on stairs.Logical formLearned from3 sentences. Steps may ascend a stair.Logical formLearned from3 sentences.