1. I regret what I did. Please forgive me.
2. I sincerely apologize for not calling earlier.
3. I feel extremely guilty about what I said. Hope you did not mind it.
4. Pardon me for being so rude.
5. I'm afraid I can't help you.
6. My apologies for the delay in getting back to you.
7. Forgive me for what I said, I did not intend to hurt you.
8. I beg your pardon.
9. Excuse me for interrupting.
10. I shouldn't have said that, please don't be mad at me.
11. I'm ashamed to say I followed him home
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