English verb conjugation
COULD WHIR

Regular verb: whir - whired - whired

Affirmation

Simple form	V-ing form
I could whir you could whir he could whir we could whir you could whir they could whir	I could be whiring you could be whiring he could be whiring we could be whiring you could be whiring they could be whiring
Perfect	V-ing perfect
I could have whired you could have whired he could have whired we could have whired you could have whired they could have whired	I could have been whiring you could have been whiring he could have been whiring we could have been whiring you could have been whiring they could have been whiring

Negation

Simple form	V-ing form
I could not whir you could not whir he could not whir we could not whir you could not whir they could not whir	I could not be whiring you could not be whiring he could not be whiring we could not be whiring you could not be whiring they could not be whiring
Perfect	V-ing perfect
I could not have whired you could not have whired he could not have whired we could not have whired you could not have whired they could not have whired	I could not have been whiring you could not have been whiring he could not have been whiring we could not have been whiring you could not have been whiring they could not have been whiring

Interrogative form

Simple form	V-ing form
could I whir? could you whir? could he whir? could we whir? could you whir? could they whir?	could I be whiring? could you be whiring? could he be whiring? could we be whiring? could you be whiring? could they be whiring?
Perfect	V-ing perfect
could I have whired? could you have whired? could he have whired? could we have whired? could you have whired? could they have whired?	could I have been whiring? could you have been whiring? could he have been whiring? could we have been whiring? could you have been whiring? could they have been whiring?

Interro-negative form

Simple form	V-ing form
could I not whir? could you not whir? could he not whir? could we not whir? could you not whir? could they not whir?	could I not be whiring? could you not be whiring? could he not be whiring? could we not be whiring? could you not be whiring? could they not be whiring?
Perfect	V-ing perfect
could I not have whired? could you not have whired? could he not have whired? could we not have whired? could you not have whired? could they not have whired?	could I not have been whiring? could you not have been whiring? could he not have been whiring? could we not have been whiring? could you not have been whiring? could they not have been whiring?