English verb conjugation
COULD STARE

Regular verb: stare - stared - stared

Affirmation

Simple form	V-ing form
I could stare you could stare he could stare we could stare you could stare they could stare	I could be staring you could be staring he could be staring we could be staring you could be staring they could be staring
Perfect	V-ing perfect
I could have stared you could have stared he could have stared we could have stared you could have stared they could have stared	I could have been staring you could have been staring he could have been staring we could have been staring you could have been staring they could have been staring

Negation

Simple form	V-ing form
I could not stare you could not stare he could not stare we could not stare you could not stare they could not stare	I could not be staring you could not be staring he could not be staring we could not be staring you could not be staring they could not be staring
Perfect	V-ing perfect
I could not have stared you could not have stared he could not have stared we could not have stared you could not have stared they could not have stared	I could not have been staring you could not have been staring he could not have been staring we could not have been staring you could not have been staring they could not have been staring

Interrogative form

Simple form	V-ing form
could I stare? could you stare? could he stare? could we stare? could you stare? could they stare?	could I be staring? could you be staring? could he be staring? could we be staring? could you be staring? could they be staring?
Perfect	V-ing perfect
could I have stared? could you have stared? could he have stared? could we have stared? could you have stared? could they have stared?	could I have been staring? could you have been staring? could he have been staring? could we have been staring? could you have been staring? could they have been staring?

Interro-negative form

Simple form	V-ing form
could I not stare? could you not stare? could he not stare? could we not stare? could you not stare? could they not stare?	could I not be staring? could you not be staring? could he not be staring? could we not be staring? could you not be staring? could they not be staring?
Perfect	V-ing perfect
could I not have stared? could you not have stared? could he not have stared? could we not have stared? could you not have stared? could they not have stared?	could I not have been staring? could you not have been staring? could he not have been staring? could we not have been staring? could you not have been staring? could they not have been staring?