From the above, we can infer that the duration of the course along with the internship, if all the levels are cleared in the first attempt, is as given hereunder:
If the internship is pursued after Foundation it will be ONE YEAR OF FOUNDATION + THREE YEARS OF INTERNSHIP (whilst appearing for Executive and Professional) = FOUR YEARS
If the internship is pursued after Executive it will be ONE YEAR OF FOUNDATION + ONE YEAR OF EXECUTIVE + TWO YEARS OF INTERNSHIP (whilst appearing for Professional)= FOUR YEARS
If the internship is pursued after Professional it will be ONE YEAR OF FOUNDATION + ONE YEAR OF EXECUTIVE + ONE YEAR OF PROFESSIONAL + ONE YEAR OF INTERNSHIP = FOUR YEARS