If you go back to your basic phonics, though, it's easy: ghoti.
"Gh" makes the f sound, as in enough
"O" makes the i sound, as in women.
"Ti" makes the sh sound, as in nation.
You could probably also spell it phech though. Or fish.
By the way, the Klingon word for fish? Ghoti.
Man, English is phuccong hard to spell.
(Note: I didn't invent ghoti, though no one seems sure who did).