A span may pertain-to days.Logical formLearned from6 sentences. A male may cast in a span.Logical formLearned from6 sentences. A (life span) may pertain-to the world.Logical formLearned from6 sentences. Spans can be constituted-of-or-filled-with valleys.Logical formLearned from6 sentences. (Attention spans) may shrink.Logical formLearned from6 sentences. An (attention span) can be adult.Logical formLearned from6 sentences. Frames can be present in a span of some second.Logical formLearned from6 sentences. A span can be constituted-of-or-filled-with some second.Logical formLearned from6 sentences. Photographs may bridge a (year span).Logical formLearned from6 sentences. An (attention span) may pertain-to a reader.Logical formLearned from6 sentences. A span may pertain-to hours.Logical formLearned from6 sentences. A (life span) may be dedicated to a project of laying a clutch of eggs.Logical formLearned from6 sentences. A span can be dangerous.Logical formLearned from6 sentences. An (attention span) may pertain-to an one.Logical formLearned from6 sentences. An (attention span) may pertain-to today.Logical formLearned from6 sentences.