English verb conjugation
COULD STRICKEN

Regular verb: stricken - strickened - strickened

Affirmation

Simple form	V-ing form
I could stricken you could stricken he could stricken we could stricken you could stricken they could stricken	I could be strickening you could be strickening he could be strickening we could be strickening you could be strickening they could be strickening
Perfect	V-ing perfect
I could have strickened you could have strickened he could have strickened we could have strickened you could have strickened they could have strickened	I could have been strickening you could have been strickening he could have been strickening we could have been strickening you could have been strickening they could have been strickening

Negation

Simple form	V-ing form
I couldn't stricken you couldn't stricken he couldn't stricken we couldn't stricken you couldn't stricken they couldn't stricken	I couldn't be strickening you couldn't be strickening he couldn't be strickening we couldn't be strickening you couldn't be strickening they couldn't be strickening
Perfect	V-ing perfect
I couldn't have strickened you couldn't have strickened he couldn't have strickened we couldn't have strickened you couldn't have strickened they couldn't have strickened	I couldn't have been strickening you couldn't have been strickening he couldn't have been strickening we couldn't have been strickening you couldn't have been strickening they couldn't have been strickening

Interrogative form

Simple form	V-ing form
could I stricken? could you stricken? could he stricken? could we stricken? could you stricken? could they stricken?	could I be strickening? could you be strickening? could he be strickening? could we be strickening? could you be strickening? could they be strickening?
Perfect	V-ing perfect
could I have strickened? could you have strickened? could he have strickened? could we have strickened? could you have strickened? could they have strickened?	could I have been strickening? could you have been strickening? could he have been strickening? could we have been strickening? could you have been strickening? could they have been strickening?

Interro-negative form

Simple form	V-ing form
couldn't I stricken? couldn't you stricken? couldn't he stricken? couldn't we stricken? couldn't you stricken? couldn't they stricken?	couldn't I be strickening? couldn't you be strickening? couldn't he be strickening? couldn't we be strickening? couldn't you be strickening? couldn't they be strickening?
Perfect	V-ing perfect
couldn't I have strickened? couldn't you have strickened? couldn't he have strickened? couldn't we have strickened? couldn't you have strickened? couldn't they have strickened?	couldn't I have been strickening? couldn't you have been strickening? couldn't he have been strickening? couldn't we have been strickening? couldn't you have been strickening? couldn't they have been strickening?