English verb conjugation
COULD MARVEL

Regular verb: marvel - marvelled - marvelled

Affirmation

Simple form	V-ing form
I could marvel you could marvel he could marvel we could marvel you could marvel they could marvel	I could be marvelling you could be marvelling he could be marvelling we could be marvelling you could be marvelling they could be marvelling
Perfect	V-ing perfect
I could have marvelled you could have marvelled he could have marvelled we could have marvelled you could have marvelled they could have marvelled	I could have been marvelling you could have been marvelling he could have been marvelling we could have been marvelling you could have been marvelling they could have been marvelling

Negation

Simple form	V-ing form
I couldn't marvel you couldn't marvel he couldn't marvel we couldn't marvel you couldn't marvel they couldn't marvel	I couldn't be marvelling you couldn't be marvelling he couldn't be marvelling we couldn't be marvelling you couldn't be marvelling they couldn't be marvelling
Perfect	V-ing perfect
I couldn't have marvelled you couldn't have marvelled he couldn't have marvelled we couldn't have marvelled you couldn't have marvelled they couldn't have marvelled	I couldn't have been marvelling you couldn't have been marvelling he couldn't have been marvelling we couldn't have been marvelling you couldn't have been marvelling they couldn't have been marvelling

Interrogative form

Simple form	V-ing form
could I marvel? could you marvel? could he marvel? could we marvel? could you marvel? could they marvel?	could I be marvelling? could you be marvelling? could he be marvelling? could we be marvelling? could you be marvelling? could they be marvelling?
Perfect	V-ing perfect
could I have marvelled? could you have marvelled? could he have marvelled? could we have marvelled? could you have marvelled? could they have marvelled?	could I have been marvelling? could you have been marvelling? could he have been marvelling? could we have been marvelling? could you have been marvelling? could they have been marvelling?

Interro-negative form

Simple form	V-ing form
couldn't I marvel? couldn't you marvel? couldn't he marvel? couldn't we marvel? couldn't you marvel? couldn't they marvel?	couldn't I be marvelling? couldn't you be marvelling? couldn't he be marvelling? couldn't we be marvelling? couldn't you be marvelling? couldn't they be marvelling?
Perfect	V-ing perfect
couldn't I have marvelled? couldn't you have marvelled? couldn't he have marvelled? couldn't we have marvelled? couldn't you have marvelled? couldn't they have marvelled?	couldn't I have been marvelling? couldn't you have been marvelling? couldn't he have been marvelling? couldn't we have been marvelling? couldn't you have been marvelling? couldn't they have been marvelling?