English verb conjugation
COULD THICKEN THICKEN

Regular verb: thicken thicken - thicken thickened - thicken thickened

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could thicken thicken you could thicken thicken he could thicken thicken we could thicken thicken you could thicken thicken they could thicken thicken	I could be thicken thickening you could be thicken thickening he could be thicken thickening we could be thicken thickening you could be thicken thickening they could be thicken thickening
Perfect	V-ing perfect
I could have thicken thickened you could have thicken thickened he could have thicken thickened we could have thicken thickened you could have thicken thickened they could have thicken thickened	I could have been thicken thickening you could have been thicken thickening he could have been thicken thickening we could have been thicken thickening you could have been thicken thickening they could have been thicken thickening

Negation

Simple form	V-ing form
I couldn't thicken thicken you couldn't thicken thicken he couldn't thicken thicken we couldn't thicken thicken you couldn't thicken thicken they couldn't thicken thicken	I couldn't be thicken thickening you couldn't be thicken thickening he couldn't be thicken thickening we couldn't be thicken thickening you couldn't be thicken thickening they couldn't be thicken thickening
Perfect	V-ing perfect
I couldn't have thicken thickened you couldn't have thicken thickened he couldn't have thicken thickened we couldn't have thicken thickened you couldn't have thicken thickened they couldn't have thicken thickened	I couldn't have been thicken thickening you couldn't have been thicken thickening he couldn't have been thicken thickening we couldn't have been thicken thickening you couldn't have been thicken thickening they couldn't have been thicken thickening

Interrogative form

Simple form	V-ing form
could I thicken thicken? could you thicken thicken? could he thicken thicken? could we thicken thicken? could you thicken thicken? could they thicken thicken?	could I be thicken thickening? could you be thicken thickening? could he be thicken thickening? could we be thicken thickening? could you be thicken thickening? could they be thicken thickening?
Perfect	V-ing perfect
could I have thicken thickened? could you have thicken thickened? could he have thicken thickened? could we have thicken thickened? could you have thicken thickened? could they have thicken thickened?	could I have been thicken thickening? could you have been thicken thickening? could he have been thicken thickening? could we have been thicken thickening? could you have been thicken thickening? could they have been thicken thickening?

Interro-negative form

Simple form	V-ing form
couldn't I thicken thicken? couldn't you thicken thicken? couldn't he thicken thicken? couldn't we thicken thicken? couldn't you thicken thicken? couldn't they thicken thicken?	couldn't I be thicken thickening? couldn't you be thicken thickening? couldn't he be thicken thickening? couldn't we be thicken thickening? couldn't you be thicken thickening? couldn't they be thicken thickening?
Perfect	V-ing perfect
couldn't I have thicken thickened? couldn't you have thicken thickened? couldn't he have thicken thickened? couldn't we have thicken thickened? couldn't you have thicken thickened? couldn't they have thicken thickened?	couldn't I have been thicken thickening? couldn't you have been thicken thickening? couldn't he have been thicken thickening? couldn't we have been thicken thickening? couldn't you have been thicken thickening? couldn't they have been thicken thickening?