Hello native English speakers. The following is many sentences written by me expressing the same meaning by my trying my best to make them concise, while , as a native Chinese speaker, I have no courage to say they are grammatically correct. 1. I fear nobody when shutting my door, whereas I do anybody when opening it. 2. I fear nobody when closing my door but anybody when opening it. 3. Shutting my door, I fear nobody, opening it , I fear anybody. 4. Shutting my door, I fear nobody, but/while/when/however opening it , I fear anybody. 5. Shutting my door, I am afraid of none/nobody, whereas opening it , I fear anybody. 6. Shutting my door, I fear nobody, where I open it , I fear anybody. Question: Which is grammatically correct? Do they have the same meaning?