You can only change ONE letter, AND/OR rearrange the letters currently available. The first word is:
WINS
pika
pica
caid
acid
paid
padi
adit
toad
doat
oats
star
sear
raze
trez
tyre
true
curt
cute
cult
talc
talk
with Mimi ;-)
tark (colloquialism)
rake
rack