If I were to respond with the textual representation of a long, drawn out sniff, would the emphasis be placed on the 'i' or the 'f'?

SNIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIFF

or

SNIFFFFFFFFFFFFFFFFFFFFFFFFFFFFF?

Perhaps the dwell is on the 'n' as in

SNNNNNNNNNNNNNNNNNNNNNNNNNNNNNIFF?

Questions, questions.