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doubling rule
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tilt + ing
tilting
Oops!
Okay!
sled + ing
sledding
Oops!
Okay!
ship + ment
shipment
Oops!
Okay!
jump + ing
jumping
Oops!
Okay!
kiss + ed
kissed
Oops!
Okay!
stop + ed
stopped
Oops!
Okay!
spin + er
spinner
Oops!
Okay!
kick + ed
kicked
Oops!
Okay!
slip + er
slipper
Oops!
Okay!
sit + ing
sitting
Oops!
Okay!
flat + est
flattest
Oops!
Okay!
melt + ed
melted
Oops!
Okay!
fast + ing
fasting
Oops!
Okay!
duck + ed
ducked
Oops!
Okay!
run + ing
running
Oops!
Okay!
plan + ing
planning
Oops!
Okay!
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