(x)y = ελληνική λέξη

This week it occurred to me that if the second letter in an English word is y, it's probably from Greek. Let's try it out:

Ay...no Greek words. Not an auspicious start, is it?
Byssinosis, (A)byss.
Cytoplasm, Cyst, Cynosure, Cynic, Cycle, Cyanide, Cypress.
Dynamo, Dysentery, Dyspepsia.
Ey...no Greek words.
F in Greek is phi Φ, which we'd write as ph, thus: Phylum, Physics, Phytoplankton.
G/J: Gyroscope, Gynecology.
Hymen, Hydrogen, Hysteria.
I...no English words beginning with "Iy"
K/Q: Kythera (Zither)
Lyre, Lycanthrope
Mystery, Myriad, Myrtle, Myrrh, Mycelium
Nymph; but not Nylon.
Oyster
Pyromania, Pylon, Pyramid.
Rhyme, Rhythm. Don't split hairs, you know the h is silent.
Synonym, Sycamore, Symbol
Tyrant, Tyro, Type, Typhus
U...no English words beginning with "Uy"
W and V...no Greek words.
Xylophone
Zymurgy, Zygote.

ελληνική λέξη = Greek word