The two Greek letters that begin with P and have three letters are PHI and PSI. There are no Greek letters that end with S.
"icicles" is: vowel, consonant, vowel, consonant, consonant, vowel, consonant. Or VCVCCVC. If that's even what you mean. There are words referred to as "consonant, vowel, consonant" words, but they are always three letters long. A "consonant vowel" word would only be two letter long, like : be. So I'm not sure what you're asking here.
Three letter animals that start with the letter c:catcodcow
xis
Now
Emu
any
You is not a letter it is three letters in a word.
Some U words (uniform, unique, unicorn) sound like YOO (the Y consonant followed by OO). The word "one" sounds like it starts with a W (wun).
hadhaghamhashathayhemhenherheyhidhimhiphishithoghoehothowhuehubhumhut
use
Guy
nun