Words formed from any letters in subsurface plus optional blank

d -

red₄

sad₄

urd₅

e -

ree₃

see₃

g -

reg₅

rug₆

sag₅

seg₅

h -

sha₅

she₅

i -

rei₃

ria₃

rib₆

rif₆

sei₃

sib₆

sic₆

sir₃

sis₃

sri₃

k -

ska₇

uke₈

l -

sal₄

sel₄

ulu₆

m -

rem₆

rum₇

sum₇

n -

run₅

sen₄

sun₅

uns₅

urn₅

o -

rob₆

roc₆

roe₃

sob₆

sos₃

sou₄

p -

rep₆

sap₆

spa₆

sup₇

ups₇

q -

suq₁₃

t -

ret₃

rut₄

sat₃

set₃

tab₆

tae₃

tar₃

tas₃

tau₄

tea₃

tub₇

uta₄

uts₄

v -

rev₇

vac₁₀

var₇

vas₇

vau₈

w -

saw₆

sew₆

wab₉

wae₆

war₆

was₆

web₉

x -

rax₁₀

rex₁₀

sax₁₀

sex₁₀

y -

ray₅

rya₅

rye₅

say₅

yar₅

yea₅

yes₅