The FRIES acronym for creating a cover letter stands for Formal Researched Interesting Enthusiastic and Specific. Therefore, "Relevant" is not part of the acronym. This strategy refers to the elements an applicant should take into account when writing a cover letter, that is to say, the letter that accompanies their resumé.
In overall, the purpose of a cover letter is to introduce you as an applicant who is interested in locating a job within a company and is sent to a potential employer.
So, in order to have a good chance of having a good impression based on this cover letter, the applicant should address the potential employee in a formal tone, they should make some research about the company beforehand to learn what the company is about and the type of employee it is looking for; the letter also should be enthusiastic and interesting to catch the employer's eye and show that the applicant is motivated, eager to have that job position, and it should be specific, which means that it should present all the applicant's working and studying experience related to that job position they want to get, which will prove that they are qualified.