could precanvass
Regular verb: precanvass - precanvassed- precanvassed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could precanvass
you could precanvass
he could precanvass
we could precanvass
you could precanvass
they could precanvass 	I could be precanvassing
you could be precanvassing
he could be precanvassing
we could be precanvassing
you could be precanvassing
they could be precanvassing	I could have precanvassed
you could have precanvassed
he could have precanvassed
we could have precanvassed
you could have precanvassed
they could have precanvassed	I could have been precanvassing
you could have been precanvassing
he could have been precanvassing
we could have been precanvassing
you could have been precanvassing
they could have been precanvassing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't precanvass
you couldn't precanvass
he couldn't precanvass
we couldn't precanvass
you couldn't precanvass
they couldn't precanvass 	I couldn't be precanvassing
you couldn't be precanvassing
he couldn't be precanvassing
we couldn't be precanvassing
you couldn't be precanvassing
they couldn't be precanvassing	I couldn't have precanvassed
you couldn't have precanvassed
he couldn't have precanvassed
we couldn't have precanvassed
you couldn't have precanvassed
they couldn't have precanvassed	I couldn't have been precanvassing
you couldn't have been precanvassing
he couldn't have been precanvassing
we couldn't have been precanvassing
you couldn't have been precanvassing
they couldn't have been precanvassing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I precanvass?
could you precanvass?
could he precanvass?
could we precanvass?
could you precanvass?
could they precanvass? 	could I be precanvassing?
could you be precanvassing?
could he be precanvassing?
could we be precanvassing?
could you be precanvassing?
could they be precanvassing? 	could I have precanvassed?
could you have precanvassed?
could he have precanvassed?
could we have precanvassed?
could you have precanvassed?
could they have precanvassed? 	could I have been precanvassing?
could you have been precanvassing?
could he have been precanvassing?
could we have been precanvassing?
could you have been precanvassing?
could they have been precanvassing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I precanvass?
couldn't you precanvass?
couldn't he precanvass?
couldn't we precanvass?
couldn't you precanvass?
couldn't they precanvass? 	couldn't I be precanvassing?
couldn't you be precanvassing?
couldn't he be precanvassing?
couldn't we be precanvassing?
couldn't you be precanvassing?
couldn't they be precanvassing? 	couldn't I have precanvassed?
couldn't you have precanvassed?
couldn't he have precanvassed?
couldn't we have precanvassed?
couldn't you have precanvassed?
couldn't they have precanvassed? 	couldn't I have been precanvassing?
couldn't you have been precanvassing?
couldn't he have been precanvassing?
couldn't we have been precanvassing?
couldn't you have been precanvassing?
couldn't they have been precanvassing?