English verb conjugation
COULD TOWEL

Regular verb: towel - towelled - towelled

Affirmation

Simple form	V-ing form
I could towel you could towel he could towel we could towel you could towel they could towel	I could be towelling you could be towelling he could be towelling we could be towelling you could be towelling they could be towelling
Perfect	V-ing perfect
I could have towelled you could have towelled he could have towelled we could have towelled you could have towelled they could have towelled	I could have been towelling you could have been towelling he could have been towelling we could have been towelling you could have been towelling they could have been towelling

Negation

Simple form	V-ing form
I couldn't towel you couldn't towel he couldn't towel we couldn't towel you couldn't towel they couldn't towel	I couldn't be towelling you couldn't be towelling he couldn't be towelling we couldn't be towelling you couldn't be towelling they couldn't be towelling
Perfect	V-ing perfect
I couldn't have towelled you couldn't have towelled he couldn't have towelled we couldn't have towelled you couldn't have towelled they couldn't have towelled	I couldn't have been towelling you couldn't have been towelling he couldn't have been towelling we couldn't have been towelling you couldn't have been towelling they couldn't have been towelling

Interrogative form

Simple form	V-ing form
could I towel? could you towel? could he towel? could we towel? could you towel? could they towel?	could I be towelling? could you be towelling? could he be towelling? could we be towelling? could you be towelling? could they be towelling?
Perfect	V-ing perfect
could I have towelled? could you have towelled? could he have towelled? could we have towelled? could you have towelled? could they have towelled?	could I have been towelling? could you have been towelling? could he have been towelling? could we have been towelling? could you have been towelling? could they have been towelling?

Interro-negative form

Simple form	V-ing form
couldn't I towel? couldn't you towel? couldn't he towel? couldn't we towel? couldn't you towel? couldn't they towel?	couldn't I be towelling? couldn't you be towelling? couldn't he be towelling? couldn't we be towelling? couldn't you be towelling? couldn't they be towelling?
Perfect	V-ing perfect
couldn't I have towelled? couldn't you have towelled? couldn't he have towelled? couldn't we have towelled? couldn't you have towelled? couldn't they have towelled?	couldn't I have been towelling? couldn't you have been towelling? couldn't he have been towelling? couldn't we have been towelling? couldn't you have been towelling? couldn't they have been towelling?