English verb conjugation
COULD SLURP

Regular verb: slurp - slurped - slurped

Affirmation

Simple form	V-ing form
I could slurp you could slurp he could slurp we could slurp you could slurp they could slurp	I could be slurping you could be slurping he could be slurping we could be slurping you could be slurping they could be slurping
Perfect	V-ing perfect
I could have slurped you could have slurped he could have slurped we could have slurped you could have slurped they could have slurped	I could have been slurping you could have been slurping he could have been slurping we could have been slurping you could have been slurping they could have been slurping

Negation

Simple form	V-ing form
I couldn't slurp you couldn't slurp he couldn't slurp we couldn't slurp you couldn't slurp they couldn't slurp	I couldn't be slurping you couldn't be slurping he couldn't be slurping we couldn't be slurping you couldn't be slurping they couldn't be slurping
Perfect	V-ing perfect
I couldn't have slurped you couldn't have slurped he couldn't have slurped we couldn't have slurped you couldn't have slurped they couldn't have slurped	I couldn't have been slurping you couldn't have been slurping he couldn't have been slurping we couldn't have been slurping you couldn't have been slurping they couldn't have been slurping

Interrogative form

Simple form	V-ing form
could I slurp? could you slurp? could he slurp? could we slurp? could you slurp? could they slurp?	could I be slurping? could you be slurping? could he be slurping? could we be slurping? could you be slurping? could they be slurping?
Perfect	V-ing perfect
could I have slurped? could you have slurped? could he have slurped? could we have slurped? could you have slurped? could they have slurped?	could I have been slurping? could you have been slurping? could he have been slurping? could we have been slurping? could you have been slurping? could they have been slurping?

Interro-negative form

Simple form	V-ing form
couldn't I slurp? couldn't you slurp? couldn't he slurp? couldn't we slurp? couldn't you slurp? couldn't they slurp?	couldn't I be slurping? couldn't you be slurping? couldn't he be slurping? couldn't we be slurping? couldn't you be slurping? couldn't they be slurping?
Perfect	V-ing perfect
couldn't I have slurped? couldn't you have slurped? couldn't he have slurped? couldn't we have slurped? couldn't you have slurped? couldn't they have slurped?	couldn't I have been slurping? couldn't you have been slurping? couldn't he have been slurping? couldn't we have been slurping? couldn't you have been slurping? couldn't they have been slurping?