You can only change ONE letter, AND/OR rearrange the letters currently available. The first word is:
WINS
tole
pole
peon
neon
noun
noon
soon
toon
nowt
twos
slot
lust
salt
laps
taps
spit
puts
stun
turn
rung
gnus
sing
ping
pung
(is a nowt two or more neat?)