A back may pertain-to an ear.Logical formLearned from229 sentences. A back may start.Logical formLearned from228 sentences. A back may pertain-to a heel.Logical formLearned from228 sentences. A voice can be in a back of a head.Logical formLearned from224 sentences. A knife can be in a back.Logical formLearned from224 sentences. A back may pertain-to a queue.Logical formLearned from224 sentences. A muscle can be in a back.Logical formLearned from223 sentences. A back may pertain-to a school.Logical formLearned from221 sentences. A back can be arched.Logical formLearned from218 sentences. Tail can be on a back.Logical formLearned from218 sentences. A male may break a back.Logical formLearned from217 sentences. Hands may be cuffed behind a back.Logical formLearned from217 sentences. A back may pertain-to gains.Logical formLearned from216 sentences. A back may pertain-to someone.Logical formLearned from214 sentences. A back may pertain-to a rim.Logical formLearned from213 sentences.