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 couldn't window
you couldn't window
he couldn't window
we couldn't window
you couldn't window
they couldn't window

V-ing form

I couldn't be windowing
you couldn't be windowing
he couldn't be windowing
we couldn't be windowing
you couldn't be windowing
they couldn't be windowing

Perfect

I couldn't have windowed
you couldn't have windowed
he couldn't have windowed
we couldn't have windowed
you couldn't have windowed
they couldn't have windowed

V-ing perfect

I couldn't have been windowing
you couldn't have been windowing
he couldn't have been windowing
we couldn't have been windowing
you couldn't have been windowing
they couldn't 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

couldn't I window?
couldn't you window?
couldn't he window?
couldn't we window?
couldn't you window?
couldn't they window?

V-ing form

couldn't I be windowing?
couldn't you be windowing?
couldn't he be windowing?
couldn't we be windowing?
couldn't you be windowing?
couldn't they be windowing?

Perfect

couldn't I have windowed?
couldn't you have windowed?
couldn't he have windowed?
couldn't we have windowed?
couldn't you have windowed?
couldn't they have windowed?

V-ing perfect

couldn't I have been windowing?
couldn't you have been windowing?
couldn't he have been windowing?
couldn't we have been windowing?
couldn't you have been windowing?
couldn't they have been windowing?

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