1
sit
sitting
do
doing
buy
buying
pat
patting
visit
visiting
sleep
sleeping
work
working
ride
riding
drink
drinking
deliver
delivering
write
writing
wash
washing
run
running
lie
lying
go
going
die
dying
have
having
shop
shopping
speak
speaking
tie
tying
come
coming
dance
dancing
get
getting
swim
swimming
see
seeing