Words formed from any letters in peaks plus optional blank

c -

spec₁₀

d -

sped₈

i -

skip₁₁

spik₁₁

l -

slap₈

m -

spam₁₀

n -

snap₈

span₈

o -

soak₈

soap₇

soke₈

r -

spar₇

s -

spas₇

t -

spat₇

step₇

take₈

tape₇

taps₇

task₈

teak₈

teas₄

tepa₇

u -

skua₉

spue₈

supe₈

ukes₉

upas₈

v -

vase₈

w -

spew₁₀

swap₁₀

waes₇

wake₁₁

waps₁₀

wasp₁₀

weak₁₁

weka₁₁

y -

spay₉

syke₁₀

yaks₁₀

yaps₉

yeas₆

z -

spaz₁₆

zaps₁₆

zeks₁₇