Add various -ing endings

[ghost]

I pulled shy of four thousand contractions from 44 GB of plain English text documents provided by Project Gutenberg (and sorted by frequency to pull words having more than 7 occurrences). ispell was quite helpful in whittlin' down the list by removin' spellin' mistakes. A few hundred that may have been erroneously tagged as a spellin' mistake I'm submittin' for your consideration.

I've separated British/Canadian words (they might be fine, I haven't checked).

Common -ing

U.S./British/Canadian:

agoing
backsliding
beijing
bellering
bestowing
birling
birthing
blethering
blighting
bling
bloodletting
booing
bossing
bowring
brokering
caregiving
chinking
cinching
clacking
clinking
composting
congratulating
copping
cramping
cumming
cussing
desponding
deviling
dieting
disembarking
disorienting
dowling
downsizing
dumpling
electioneering
embroidering
energizing
enfolding
ergoing
etching
evangelizing
externalizing
fending
filmmaking
freestanding
fruiting
galavanting
gamboling
ganging
genotyping
gloating
globalizing
glorifying
gritting
groundbreaking
gulping
hamstring
heartrending
heartwarming
hobnobbing
homeschooling
hoofing
housecleaning
huffing
humbugging
ingesting
jeering
jogging
kayaking
kenning
ketching
kidnapping
kinking
lambasting
lobstering
lovemaking
lynching
magnetizing
mainstreaming
manoeuvering
marauding
mascotting
mesmerizing
misdoubting
mislaying
mooching
moonshining
moralizing
morphing
moseying
namsaying
necrotizing
neighing
neuroimaging
nonconforming
nonliving
nonthreatening
offshoring
ogling
outbreaking
outcropping
outfitting
overfishing
overmastering
overreaching
overreacting
overrunning
overtraining
overweening
palavering
palpitating
panicking
peacebuilding
peacekeeping
petering
pinting
ploughing
plumping
podcasting
pooing
pottering
pranking
privateering
profiteering
prostrating
punning
queering
queueing
rectifying
reengineering
refinancing
reframing
reprocessing
reverberating
riling
roughing
rubbering
rulemaking
ruminating
sanctifying
scarring
scenting
serenading
sharking
shinning
shoemaking
shucking
simpering
singeing
slicking
slobbering
sloshing
smelting
smouldering
sniggering
snoozing
sorrowing
sousing
spattering
sputtering
stenting
stiffing
stirling
superconducting
superintending
sweethearting
swishing
tangoing
tattering
tattooing
telecommuting
thirsting
totalling
traiting
trawling
trenching
tromping
trysting
underscoring
unfeeling
uninviting
unloving
unmasking
unmeaning
unoffending
unpleasing
untiring
upbraiding
upbuilding
usurping
vaunting
verging
versioning
viking
vitalizing
vivifying
wafting
weakling
whupping
worshipping
yammering
yearling

-sing

British/Canadian:

analysing
authorising
colonising
dramatising
emphasising
harmonising
maximising
minimising
mobilising
optimising
organising
overexpressing
oxidising
paralysing
patronising
practising
predisposing
prepossessing
realising
recognising
tantalising
theorising
trapesing
utilising

-ouring

British/Canadian:

colouring
endeavouring
favouring
harbouring
honouring
labouring
neighbouring

-lling

British/Canadian:

counselling
duelling
equalling
grovelling
labelling
levelling
lulling
marshalling
marvelling
modelling
panelling
quarrelling
remodelling
revelling
schilling
shovelling
signalling
snivelling
squalling
totalling
travelling
trilling
tunnelling
unravelling
upwelling
victualling