English verb conjugation
COULD FISSURE

Regular verb: fissure - fissured - fissured

Affirmation

Simple form	V-ing form
I could fissure you could fissure he could fissure we could fissure you could fissure they could fissure	I could be fissuring you could be fissuring he could be fissuring we could be fissuring you could be fissuring they could be fissuring
Perfect	V-ing perfect
I could have fissured you could have fissured he could have fissured we could have fissured you could have fissured they could have fissured	I could have been fissuring you could have been fissuring he could have been fissuring we could have been fissuring you could have been fissuring they could have been fissuring

Negation

Simple form	V-ing form
I couldn't fissure you couldn't fissure he couldn't fissure we couldn't fissure you couldn't fissure they couldn't fissure	I couldn't be fissuring you couldn't be fissuring he couldn't be fissuring we couldn't be fissuring you couldn't be fissuring they couldn't be fissuring
Perfect	V-ing perfect
I couldn't have fissured you couldn't have fissured he couldn't have fissured we couldn't have fissured you couldn't have fissured they couldn't have fissured	I couldn't have been fissuring you couldn't have been fissuring he couldn't have been fissuring we couldn't have been fissuring you couldn't have been fissuring they couldn't have been fissuring

Interrogative form

Simple form	V-ing form
could I fissure? could you fissure? could he fissure? could we fissure? could you fissure? could they fissure?	could I be fissuring? could you be fissuring? could he be fissuring? could we be fissuring? could you be fissuring? could they be fissuring?
Perfect	V-ing perfect
could I have fissured? could you have fissured? could he have fissured? could we have fissured? could you have fissured? could they have fissured?	could I have been fissuring? could you have been fissuring? could he have been fissuring? could we have been fissuring? could you have been fissuring? could they have been fissuring?

Interro-negative form

Simple form	V-ing form
couldn't I fissure? couldn't you fissure? couldn't he fissure? couldn't we fissure? couldn't you fissure? couldn't they fissure?	couldn't I be fissuring? couldn't you be fissuring? couldn't he be fissuring? couldn't we be fissuring? couldn't you be fissuring? couldn't they be fissuring?
Perfect	V-ing perfect
couldn't I have fissured? couldn't you have fissured? couldn't he have fissured? couldn't we have fissured? couldn't you have fissured? couldn't they have fissured?	couldn't I have been fissuring? couldn't you have been fissuring? couldn't he have been fissuring? couldn't we have been fissuring? couldn't you have been fissuring? couldn't they have been fissuring?