English verb conjugation
COULD PUMICE

Regular verb: pumice - pumiced - pumiced

Affirmation

Simple form	V-ing form
I could pumice you could pumice he could pumice we could pumice you could pumice they could pumice	I could be pumicing you could be pumicing he could be pumicing we could be pumicing you could be pumicing they could be pumicing
Perfect	V-ing perfect
I could have pumiced you could have pumiced he could have pumiced we could have pumiced you could have pumiced they could have pumiced	I could have been pumicing you could have been pumicing he could have been pumicing we could have been pumicing you could have been pumicing they could have been pumicing

Negation

Simple form	V-ing form
I couldn't pumice you couldn't pumice he couldn't pumice we couldn't pumice you couldn't pumice they couldn't pumice	I couldn't be pumicing you couldn't be pumicing he couldn't be pumicing we couldn't be pumicing you couldn't be pumicing they couldn't be pumicing
Perfect	V-ing perfect
I couldn't have pumiced you couldn't have pumiced he couldn't have pumiced we couldn't have pumiced you couldn't have pumiced they couldn't have pumiced	I couldn't have been pumicing you couldn't have been pumicing he couldn't have been pumicing we couldn't have been pumicing you couldn't have been pumicing they couldn't have been pumicing

Interrogative form

Simple form	V-ing form
could I pumice? could you pumice? could he pumice? could we pumice? could you pumice? could they pumice?	could I be pumicing? could you be pumicing? could he be pumicing? could we be pumicing? could you be pumicing? could they be pumicing?
Perfect	V-ing perfect
could I have pumiced? could you have pumiced? could he have pumiced? could we have pumiced? could you have pumiced? could they have pumiced?	could I have been pumicing? could you have been pumicing? could he have been pumicing? could we have been pumicing? could you have been pumicing? could they have been pumicing?

Interro-negative form

Simple form	V-ing form
couldn't I pumice? couldn't you pumice? couldn't he pumice? couldn't we pumice? couldn't you pumice? couldn't they pumice?	couldn't I be pumicing? couldn't you be pumicing? couldn't he be pumicing? couldn't we be pumicing? couldn't you be pumicing? couldn't they be pumicing?
Perfect	V-ing perfect
couldn't I have pumiced? couldn't you have pumiced? couldn't he have pumiced? couldn't we have pumiced? couldn't you have pumiced? couldn't they have pumiced?	couldn't I have been pumicing? couldn't you have been pumicing? couldn't he have been pumicing? couldn't we have been pumicing? couldn't you have been pumicing? couldn't they have been pumicing?