Which preposition to use with ef

at Occurrences 1%

I've often thought thet ef at the Jedgment the good Lord would only examine me an' all them thet went to school in my day, in the old blue-back speller 'stid o' tacklin' us on the weak pints of our pore mortal lives, why, we'd stand about ez good a chance o' gettin' to heaven ez anybody else.

by Occurrences 1%

" "Ef by mam'selle

Which preposition to use with  ef