English verb conjugation
COULD GLISTEN

Regular verb: glisten - glistened - glistened

Affirmation

Simple form	V-ing form
I could glisten you could glisten he could glisten we could glisten you could glisten they could glisten	I could be glistening you could be glistening he could be glistening we could be glistening you could be glistening they could be glistening
Perfect	V-ing perfect
I could have glistened you could have glistened he could have glistened we could have glistened you could have glistened they could have glistened	I could have been glistening you could have been glistening he could have been glistening we could have been glistening you could have been glistening they could have been glistening

Negation

Simple form	V-ing form
I couldn't glisten you couldn't glisten he couldn't glisten we couldn't glisten you couldn't glisten they couldn't glisten	I couldn't be glistening you couldn't be glistening he couldn't be glistening we couldn't be glistening you couldn't be glistening they couldn't be glistening
Perfect	V-ing perfect
I couldn't have glistened you couldn't have glistened he couldn't have glistened we couldn't have glistened you couldn't have glistened they couldn't have glistened	I couldn't have been glistening you couldn't have been glistening he couldn't have been glistening we couldn't have been glistening you couldn't have been glistening they couldn't have been glistening

Interrogative form

Simple form	V-ing form
could I glisten? could you glisten? could he glisten? could we glisten? could you glisten? could they glisten?	could I be glistening? could you be glistening? could he be glistening? could we be glistening? could you be glistening? could they be glistening?
Perfect	V-ing perfect
could I have glistened? could you have glistened? could he have glistened? could we have glistened? could you have glistened? could they have glistened?	could I have been glistening? could you have been glistening? could he have been glistening? could we have been glistening? could you have been glistening? could they have been glistening?

Interro-negative form

Simple form	V-ing form
couldn't I glisten? couldn't you glisten? couldn't he glisten? couldn't we glisten? couldn't you glisten? couldn't they glisten?	couldn't I be glistening? couldn't you be glistening? couldn't he be glistening? couldn't we be glistening? couldn't you be glistening? couldn't they be glistening?
Perfect	V-ing perfect
couldn't I have glistened? couldn't you have glistened? couldn't he have glistened? couldn't we have glistened? couldn't you have glistened? couldn't they have glistened?	couldn't I have been glistening? couldn't you have been glistening? couldn't he have been glistening? couldn't we have been glistening? couldn't you have been glistening? couldn't they have been glistening?