English verb conjugation
COULD GROVEL

Regular verb: grovel - grovelled - grovelled

Affirmation

Simple form	V-ing form
I could grovel you could grovel he could grovel we could grovel you could grovel they could grovel	I could be grovelling you could be grovelling he could be grovelling we could be grovelling you could be grovelling they could be grovelling
Perfect	V-ing perfect
I could have grovelled you could have grovelled he could have grovelled we could have grovelled you could have grovelled they could have grovelled	I could have been grovelling you could have been grovelling he could have been grovelling we could have been grovelling you could have been grovelling they could have been grovelling

Negation

Simple form	V-ing form
I couldn't grovel you couldn't grovel he couldn't grovel we couldn't grovel you couldn't grovel they couldn't grovel	I couldn't be grovelling you couldn't be grovelling he couldn't be grovelling we couldn't be grovelling you couldn't be grovelling they couldn't be grovelling
Perfect	V-ing perfect
I couldn't have grovelled you couldn't have grovelled he couldn't have grovelled we couldn't have grovelled you couldn't have grovelled they couldn't have grovelled	I couldn't have been grovelling you couldn't have been grovelling he couldn't have been grovelling we couldn't have been grovelling you couldn't have been grovelling they couldn't have been grovelling

Interrogative form

Simple form	V-ing form
could I grovel? could you grovel? could he grovel? could we grovel? could you grovel? could they grovel?	could I be grovelling? could you be grovelling? could he be grovelling? could we be grovelling? could you be grovelling? could they be grovelling?
Perfect	V-ing perfect
could I have grovelled? could you have grovelled? could he have grovelled? could we have grovelled? could you have grovelled? could they have grovelled?	could I have been grovelling? could you have been grovelling? could he have been grovelling? could we have been grovelling? could you have been grovelling? could they have been grovelling?

Interro-negative form

Simple form	V-ing form
couldn't I grovel? couldn't you grovel? couldn't he grovel? couldn't we grovel? couldn't you grovel? couldn't they grovel?	couldn't I be grovelling? couldn't you be grovelling? couldn't he be grovelling? couldn't we be grovelling? couldn't you be grovelling? couldn't they be grovelling?
Perfect	V-ing perfect
couldn't I have grovelled? couldn't you have grovelled? couldn't he have grovelled? couldn't we have grovelled? couldn't you have grovelled? couldn't they have grovelled?	couldn't I have been grovelling? couldn't you have been grovelling? couldn't he have been grovelling? couldn't we have been grovelling? couldn't you have been grovelling? couldn't they have been grovelling?