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 could not precanvass
you could not precanvass
he could not precanvass
we could not precanvass
you could not precanvass
they could not precanvass 	I could not be precanvassing
you could not be precanvassing
he could not be precanvassing
we could not be precanvassing
you could not be precanvassing
they could not be precanvassing	I could not have precanvassed
you could not have precanvassed
he could not have precanvassed
we could not have precanvassed
you could not have precanvassed
they could not have precanvassed	I could not have been precanvassing
you could not have been precanvassing
he could not have been precanvassing
we could not have been precanvassing
you could not have been precanvassing
they could not 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 	
could I not precanvass?
could you not precanvass?
could he not precanvass?
could we not precanvass?
could you not precanvass?
could they not precanvass? 	could I not be precanvassing?
could you not be precanvassing?
could he not be precanvassing?
could we not be precanvassing?
could you not be precanvassing?
could they not be precanvassing? 	could I not have precanvassed?
could you not have precanvassed?
could he not have precanvassed?
could we not have precanvassed?
could you not have precanvassed?
could they not have precanvassed? 	could I not have been precanvassing?
could you not have been precanvassing?
could he not have been precanvassing?
could we not have been precanvassing?
could you not have been precanvassing?
could they not have been precanvassing?