English verb conjugation
COULD BELL

Regular verb: bell - belled - belled

Affirmation

Simple form	V-ing form
I could bell you could bell he could bell we could bell you could bell they could bell	I could be belling you could be belling he could be belling we could be belling you could be belling they could be belling
Perfect	V-ing perfect
I could have belled you could have belled he could have belled we could have belled you could have belled they could have belled	I could have been belling you could have been belling he could have been belling we could have been belling you could have been belling they could have been belling

Negation

Simple form	V-ing form
I couldn't bell you couldn't bell he couldn't bell we couldn't bell you couldn't bell they couldn't bell	I couldn't be belling you couldn't be belling he couldn't be belling we couldn't be belling you couldn't be belling they couldn't be belling
Perfect	V-ing perfect
I couldn't have belled you couldn't have belled he couldn't have belled we couldn't have belled you couldn't have belled they couldn't have belled	I couldn't have been belling you couldn't have been belling he couldn't have been belling we couldn't have been belling you couldn't have been belling they couldn't have been belling

Interrogative form

Simple form	V-ing form
could I bell? could you bell? could he bell? could we bell? could you bell? could they bell?	could I be belling? could you be belling? could he be belling? could we be belling? could you be belling? could they be belling?
Perfect	V-ing perfect
could I have belled? could you have belled? could he have belled? could we have belled? could you have belled? could they have belled?	could I have been belling? could you have been belling? could he have been belling? could we have been belling? could you have been belling? could they have been belling?

Interro-negative form

Simple form	V-ing form
couldn't I bell? couldn't you bell? couldn't he bell? couldn't we bell? couldn't you bell? couldn't they bell?	couldn't I be belling? couldn't you be belling? couldn't he be belling? couldn't we be belling? couldn't you be belling? couldn't they be belling?
Perfect	V-ing perfect
couldn't I have belled? couldn't you have belled? couldn't he have belled? couldn't we have belled? couldn't you have belled? couldn't they have belled?	couldn't I have been belling? couldn't you have been belling? couldn't he have been belling? couldn't we have been belling? couldn't you have been belling? couldn't they have been belling?