[Grammar] vacancies of/for (a) marketing trainee(s).

[uktous]

Hi,

Question:
Which sentences are correct?

Sentence1:
I am writing to you to ask if you have any vacancies of marketing trainee.
Sentence2:
I am writing to you to ask if you have any vacancies for marketing trainee.
Sentence3:
I am writing to you to ask if you have any vacancies of marketing trainees.
Sentence4:
I am writing to you to ask if you have any vacancies for marketing trainees.
Sentence5:
I am writing to you to ask if you have any vacancies of a marketing trainee.
Sentence6:
I am writing to you to ask if you have any vacancies for a marketing trainee.

Thanks

 

[Barb_D]

#6