Words w/ "Y" as Vowels

paralysis

analysis

mystery

ca-ta-lyst

Four-Letter Words w/ "I"

bill

sill

trill

pill

pin

spin

mint

spill

fill

dill

dint

dim

dick

different

dig

dix

dip

dizzy

gist

fin

gilt

gym

Four-Letter Words w/ "E"

ex

beds

feds

slept

pep

prep

best

sled

pest

present

tempest

tent

rent

hen

shed

bend

bell

hell

shell

sell

dell

dent

pent

sent

deck

wrench

wreck

get

go

la-dies and  gen-nel-men

gen-tel-men

freckle

fend

friend

fester

faster

hen

hemp

egg

x-cheese

fell

felt

pelt

prend

lex

ted

text

quest

rest

express