The following are ten sentences , but they are trying to express the same meaning. Which is grammatically correct? 1. If it were not for your help, I could not succeed. 2. Were it not for your help, I could not succeed. 3. I could not succeed if it were not for your help. 4. I could not succeed were it not for your help. 5. If it were not that you helped me, I could not succeed. 6. Were it not that you helped me, I could not succeed. 7. If it was not that you helped me, I could not succeed. 8. Was it not that you helped me, I could not succeed. 9. I could not succeed if it were not that you had helped me. 10. I can not succeed if it was not that you help me. Question: Which is grammatically correct? Do they have the same meaning?