could whir
Regular verb: whir - whired- whired

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	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 	Perfect 	V-ing perfect 	
I couldn't whir
you couldn't whir
he couldn't whir
we couldn't whir
you couldn't whir
they couldn't whir 	I couldn't be whiring
you couldn't be whiring
he couldn't be whiring
we couldn't be whiring
you couldn't be whiring
they couldn't be whiring	I couldn't have whired
you couldn't have whired
he couldn't have whired
we couldn't have whired
you couldn't have whired
they couldn't have whired	I couldn't have been whiring
you couldn't have been whiring
he couldn't have been whiring
we couldn't have been whiring
you couldn't have been whiring
they couldn't have been whiring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	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 	Perfect 	V-ing perfect 	
couldn't I whir?
couldn't you whir?
couldn't he whir?
couldn't we whir?
couldn't you whir?
couldn't they whir? 	couldn't I be whiring?
couldn't you be whiring?
couldn't he be whiring?
couldn't we be whiring?
couldn't you be whiring?
couldn't they be whiring? 	couldn't I have whired?
couldn't you have whired?
couldn't he have whired?
couldn't we have whired?
couldn't you have whired?
couldn't they have whired? 	couldn't I have been whiring?
couldn't you have been whiring?
couldn't he have been whiring?
couldn't we have been whiring?
couldn't you have been whiring?
couldn't they have been whiring?