A male can be at a back of a pack.Logical formLearned from12 sentences. A pack may pertain-to cards.Logical formLearned from12 sentences. A back pack can be black.Logical formLearned from12 sentences. A breakaway can be from a pack.Logical formLearned from12 sentences. (Pack fans) may pertain-to a male.Logical formLearned from12 sentences. Some pack can be constituted-of-or-filled-with crayons.Logical formLearned from12 sentences. A predator may hunt in packs.Logical formLearned from12 sentences. A pack can be constituted-of-or-filled-with milk.Logical formLearned from12 sentences. A male may drop a pack.Logical formLearned from12 sentences. A pack can be constituted-of-or-filled-with elephants.Logical formLearned from12 sentences. A pack can be great.Logical formLearned from12 sentences. A pack may sit.Logical formLearned from12 sentences. A pack can be thin.Logical formLearned from12 sentences. A pack can be comfortable.Logical formLearned from12 sentences. A box may contain some packs.Logical formLearned from12 sentences.