A breaking-up may pertain-to a pack.Logical formLearned from3 sentences. A male may be seen run at a head of a pack.Logical formLearned from3 sentences. A (ghost dog) may run at a head of a pack.Logical formLearned from3 sentences. A yelp may pertain-to a pack.Logical formLearned from3 sentences. Packs of wild dogs may be heard.Logical formLearned from3 sentences. Students may receive a pack.Logical formLearned from3 sentences. (Language packs) may be installed.Logical formLearned from3 sentences. Pack can be a step.Logical formLearned from3 sentences. A (winter expedition) can be into a (sea ice pack).Logical formLearned from3 sentences. A (pack hunting) may pass a door.Logical formLearned from3 sentences. Pack may pursue an actaeon.Logical formLearned from3 sentences. Fangs may pertain-to a pack.Logical formLearned from3 sentences. Teeth may pertain-to a pack.Logical formLearned from3 sentences. A pack may cry at heels.Logical formLearned from3 sentences. A male may suffer from a pack.Logical formLearned from3 sentences.