English verb conjugation COULD WINDOW

Regular verb: window - windowed - windowed

Affirmation

Simple form

I could window
you could window
he could window
we could window
you could window
they could window

V-ing form

I could be windowing
you could be windowing
he could be windowing
we could be windowing
you could be windowing
they could be windowing

Perfect

I could have windowed
you could have windowed
he could have windowed
we could have windowed
you could have windowed
they could have windowed

V-ing perfect

I could have been windowing
you could have been windowing
he could have been windowing
we could have been windowing
you could have been windowing
they could have been windowing

Negation

Simple form

I could not window
you could not window
he could not window
we could not window
you could not window
they could not window

V-ing form

I could not be windowing
you could not be windowing
he could not be windowing
we could not be windowing
you could not be windowing
they could not be windowing

Perfect

I could not have windowed
you could not have windowed
he could not have windowed
we could not have windowed
you could not have windowed
they could not have windowed

V-ing perfect

I could not have been windowing
you could not have been windowing
he could not have been windowing
we could not have been windowing
you could not have been windowing
they could not have been windowing

Interrogative form

Simple form

could I window?
could you window?
could he window?
could we window?
could you window?
could they window?

V-ing form

could I be windowing?
could you be windowing?
could he be windowing?
could we be windowing?
could you be windowing?
could they be windowing?

Perfect

could I have windowed?
could you have windowed?
could he have windowed?
could we have windowed?
could you have windowed?
could they have windowed?

V-ing perfect

could I have been windowing?
could you have been windowing?
could he have been windowing?
could we have been windowing?
could you have been windowing?
could they have been windowing?

Interro-negative form

Simple form

could I not window?
could you not window?
could he not window?
could we not window?
could you not window?
could they not window?

V-ing form

could I not be windowing?
could you not be windowing?
could he not be windowing?
could we not be windowing?
could you not be windowing?
could they not be windowing?

Perfect

could I not have windowed?
could you not have windowed?
could he not have windowed?
could we not have windowed?
could you not have windowed?
could they not have windowed?

V-ing perfect

could I not have been windowing?
could you not have been windowing?
could he not have been windowing?
could we not have been windowing?
could you not have been windowing?
could they not have been windowing?

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