Challenges may lie-flat before persons.Logical formLearned from3 sentences. A female may lie-flat in a street.Logical formLearned from3 sentences. Hundreds of persons may lie-flat dead.Logical formLearned from3 sentences. Snow may lie-flat long.Logical formLearned from3 sentences. A male may lie-flat about a hour.Logical formLearned from3 sentences. Side may lie-flat silent.Logical formLearned from3 sentences. Black clouds may lie-flat impending.Logical formLearned from3 sentences. A journey may lie-flat through a forest.Logical formLearned from3 sentences. A structure may lie-flat in ruins.Logical formLearned from3 sentences. A law may lie-flat dormant.Logical formLearned from3 sentences. Some (design challenge) may lie-flat in a fact.Logical formLearned from3 sentences. Some (music books) may lie-flat on an instrument.Logical formLearned from3 sentences. Mountains of bodies may lie-flat on a platform.Logical formLearned from3 sentences. A rest may lie-flat in a black shadow.Logical formLearned from3 sentences. A male may know a path may lie-flat before a male.Logical formLearned from3 sentences.