English verb conjugation
SHOULD FUEL

Regular verb: fuel - fuelled - fuelled

Affirmation

Simple form	V-ing form
I should fuel you should fuel she should fuel we should fuel you should fuel they should fuel	I should be fuelling you should be fuelling she should be fuelling we should be fuelling you should be fuelling they should be fuelling
Perfect	V-ing perfect
I should have fuelled you should have fuelled she should have fuelled we should have fuelled you should have fuelled they should have fuelled	I should have been fuelling you should have been fuelling she should have been fuelling we should have been fuelling you should have been fuelling they should have been fuelling

Negation

Simple form	V-ing form
I should not fuel you should not fuel she should not fuel we should not fuel you should not fuel they should not fuel	I should not be fuelling you should not be fuelling she should not be fuelling we should not be fuelling you should not be fuelling they should not be fuelling
Perfect	V-ing perfect
I should not have fuelled you should not have fuelled she should not have fuelled we should not have fuelled you should not have fuelled they should not have fuelled	I should not have been fuelling you should not have been fuelling she should not have been fuelling we should not have been fuelling you should not have been fuelling they should not have been fuelling

Interrogative form

Simple form	V-ing form
should I fuel? should you fuel? should she fuel? should we fuel? should you fuel? should they fuel?	should I be fuelling? should you be fuelling? should she be fuelling? should we be fuelling? should you be fuelling? should they be fuelling?
Perfect	V-ing perfect
should I have fuelled? should you have fuelled? should she have fuelled? should we have fuelled? should you have fuelled? should they have fuelled?	should I have been fuelling? should you have been fuelling? should she have been fuelling? should we have been fuelling? should you have been fuelling? should they have been fuelling?

Interro-negative form

Simple form	V-ing form
should I not fuel? should you not fuel? should she not fuel? should we not fuel? should you not fuel? should they not fuel?	should I not be fuelling? should you not be fuelling? should she not be fuelling? should we not be fuelling? should you not be fuelling? should they not be fuelling?
Perfect	V-ing perfect
should I not have fuelled? should you not have fuelled? should she not have fuelled? should we not have fuelled? should you not have fuelled? should they not have fuelled?	should I not have been fuelling? should you not have been fuelling? should she not have been fuelling? should we not have been fuelling? should you not have been fuelling? should they not have been fuelling?