below-bellow

biding-bidding

biter-bitter

blader-bladder

caning-canning

caper-capper

coping-copping

cuter-cutter

doling-dolling

doter-dotter

filing-filling

gaming-gamming

griping-gripping

hater-hatter

hoping-hopping

huger-hugger

lager-lagger

later-latter

luger-lugger

mater-matter

moper-mopper

moping-mopping

muter-mutter

paling-palling

pater-patter

Peter-petter

piling-pilling

pining-pinning

piping-pipping

planing-planning

poling-polling

raging-ragging

rating-ratting

rider-ridder

riding-ridding

riper-ripper

ruder-rudder

shaming-shamming

siting-sitting

skiter-skitter

sliming-slimming

sloping-slopping

sniper-snipper

sober-sobber

spiting-spitting

stager-stagger

super-supper

taper-tapper

taping-tapping

tater-tatter

tiling-tilling

tiny-tinny

toter-totter

toting-totting

twining-twinning

wading-wadding

wager-wagger

waging-wagging

wiling-willing