English verb conjugation
CAN REFUEL

Regular verb: refuel - refuelled - refuelled

Affirmation

Simple form	V-ing form
I can refuel you can refuel she can refuel we can refuel you can refuel they can refuel	I can be refuelling you can be refuelling she can be refuelling we can be refuelling you can be refuelling they can be refuelling
Perfect	V-ing perfect
I can have refuelled you can have refuelled she can have refuelled we can have refuelled you can have refuelled they can have refuelled	I can have been refuelling you can have been refuelling she can have been refuelling we can have been refuelling you can have been refuelling they can have been refuelling

Negation

Simple form	V-ing form
I can't refuel you can't refuel she can't refuel we can't refuel you can't refuel they can't refuel	I can't be refuelling you can't be refuelling she can't be refuelling we can't be refuelling you can't be refuelling they can't be refuelling
Perfect	V-ing perfect
I can't have refuelled you can't have refuelled she can't have refuelled we can't have refuelled you can't have refuelled they can't have refuelled	I can't have been refuelling you can't have been refuelling she can't have been refuelling we can't have been refuelling you can't have been refuelling they can't have been refuelling

Interrogative form

Simple form	V-ing form
can I refuel? can you refuel? can she refuel? can we refuel? can you refuel? can they refuel?	can I be refuelling? can you be refuelling? can she be refuelling? can we be refuelling? can you be refuelling? can they be refuelling?
Perfect	V-ing perfect
can I have refuelled? can you have refuelled? can she have refuelled? can we have refuelled? can you have refuelled? can they have refuelled?	can I have been refuelling? can you have been refuelling? can she have been refuelling? can we have been refuelling? can you have been refuelling? can they have been refuelling?

Interro-negative form

Simple form	V-ing form
can't I refuel? can't you refuel? can't she refuel? can't we refuel? can't you refuel? can't they refuel?	can't I be refuelling? can't you be refuelling? can't she be refuelling? can't we be refuelling? can't you be refuelling? can't they be refuelling?
Perfect	V-ing perfect
can't I have refuelled? can't you have refuelled? can't she have refuelled? can't we have refuelled? can't you have refuelled? can't they have refuelled?	can't I have been refuelling? can't you have been refuelling? can't she have been refuelling? can't we have been refuelling? can't you have been refuelling? can't they have been refuelling?