Examples:
If you think you are unsure of/about a rule, feel free to message me and I will make it clear to you.
Antonis M. If you are unsure of/about a rule, feel free to message me , and I will make it clear to you. Both are OK.
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Antonis M.If you are unsure of/about a rule, feel free to message me, and I will make it clear to you.
Both are OK.