The long I vowel, [aɪ̯], is typically spelled with the letter I as in I, Friday, minor or with the letter Y as in my, cry, July. It is also spelled:
I: idea
AI: aisle
Y: by
EI: heist
eigh: height
EY: geyser
EYE: eyebrow
IE: pie
IGH: high
UY: guy
YE: dye