spd.--Gasped, lisped, crisped, wisped, cusped.
st, sts.--Mast, masts, nest, nests, fist, fists.
sw.--Swim, swell, swill, swan, sweet, swing, swam.
str.--Strap, strip, strop, stress, strut, strife, strew.

tl.--Rattle, nettle, whittle, bottle, hurtle, scuttle.
tlz, tlst.--Rattles, rattl'st, nettles, nettl'st.
tld, tldst.--Rattled, rattl'd'st, settled, settl'd'st.
ts, tst.--Bat, bat'st, bets, bet'st, pits, pit'st, dots, dot'st.
tw.--Twin, twirl, twice, tweed, twist, twelve, twain.
tr.--Trap, trip, trot, tress, truss, trash, try, truce, trice.
vz, vst.--Gives, giv'st, loves, lov'st, saves, sav'st.

zm, zmz.--Chasm, chasms, prism, prisms.
zl.--Dazzle, frizzle, nozzle, puzzle.
zlz, zld.--Dazzles, dazzled, frizzles, frizzled.
sht.--Dashed, meshed, dished, rushed, washed.
shr.--Shrank, shred, shrill, shrunk, shrine, shroud, shrew.
thd.--Bathed, sheathed, soothed, smoothed, wreathed.
thz, thzt.--Bathes, Bath'st, sheathes, sheath'st.

ngz, ngst.--Hangs, hang'st, brings, bring'st.
ngd, ngdst.--Hanged, hang'd'st., stringed, string'd'st.
nks, nkst.--Thanks, thank'st, thinks, think'st.
nkd, nkdst.--Thanked, thank'd'st, kinked, kink'd'st.
dth, dths.--Width, widths, breadth, breadths.
kld, kldst.--Circled, circl'd'st, darkle, darkl'd'st.
kl, klz.--Circle, circles, cycle, cycles.
lj, ljd.--Bilge, bilged, bulge, bulged, indulge, indulged.
lb, lbz.--Alb, albs, bulb, bulbs.