Answer
(i had a few more, like the literary term "topos", but i left out anything the answers spell-check rejected. i also did not include anything that required an apostrophe. shooting to pass 100.. reckon
i have
got about 103 here.)
a
as, at
ape, apes, apt, aptest, asp, ate
apse
aesop
et
eat, eats, eta, etas
east, etta
o
oat, oats, oops, ope, opes, opt, opts
otto
pa, po
pat, pats, pea, peas, pet, pets, pot, pots, poe
past, pate, pates, peat, peats, pest, poet, poets, pose, post
paste, pesto
potato, potatoes
so
sap, sat, sea, set, sop, sot, spa
sate, seat, sept, soap, soot, spat, spot, stat, step, stet, stop
septa, spate, state, s
p
to
tao, taos, tap, taps, tea, teas, toe, toes,
, top, tops, tot, tots
tape, tapes, tate, teat, teats, test,
t,
ts, tote, totes
taste, toast
teapot, teapots