could upstart
Regular verb: upstart - upstarted- upstarted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could upstart
you could upstart
he could upstart
we could upstart
you could upstart
they could upstart 	I could be upstarting
you could be upstarting
he could be upstarting
we could be upstarting
you could be upstarting
they could be upstarting	I could have upstarted
you could have upstarted
he could have upstarted
we could have upstarted
you could have upstarted
they could have upstarted	I could have been upstarting
you could have been upstarting
he could have been upstarting
we could have been upstarting
you could have been upstarting
they could have been upstarting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not upstart
you could not upstart
he could not upstart
we could not upstart
you could not upstart
they could not upstart 	I could not be upstarting
you could not be upstarting
he could not be upstarting
we could not be upstarting
you could not be upstarting
they could not be upstarting	I could not have upstarted
you could not have upstarted
he could not have upstarted
we could not have upstarted
you could not have upstarted
they could not have upstarted	I could not have been upstarting
you could not have been upstarting
he could not have been upstarting
we could not have been upstarting
you could not have been upstarting
they could not have been upstarting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I upstart?
could you upstart?
could he upstart?
could we upstart?
could you upstart?
could they upstart? 	could I be upstarting?
could you be upstarting?
could he be upstarting?
could we be upstarting?
could you be upstarting?
could they be upstarting? 	could I have upstarted?
could you have upstarted?
could he have upstarted?
could we have upstarted?
could you have upstarted?
could they have upstarted? 	could I have been upstarting?
could you have been upstarting?
could he have been upstarting?
could we have been upstarting?
could you have been upstarting?
could they have been upstarting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not upstart?
could you not upstart?
could he not upstart?
could we not upstart?
could you not upstart?
could they not upstart? 	could I not be upstarting?
could you not be upstarting?
could he not be upstarting?
could we not be upstarting?
could you not be upstarting?
could they not be upstarting? 	could I not have upstarted?
could you not have upstarted?
could he not have upstarted?
could we not have upstarted?
could you not have upstarted?
could they not have upstarted? 	could I not have been upstarting?
could you not have been upstarting?
could he not have been upstarting?
could we not have been upstarting?
could you not have been upstarting?
could they not have been upstarting?