English verb conjugation
CAN UPSTART

Regular verb: upstart - upstarted - upstarted

Affirmation

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

Negation

Simple form	V-ing form
I can't upstart you can't upstart he can't upstart we can't upstart you can't upstart they can't upstart	I can't be upstarting you can't be upstarting he can't be upstarting we can't be upstarting you can't be upstarting they can't be upstarting
Perfect	V-ing perfect
I can't have upstarted you can't have upstarted he can't have upstarted we can't have upstarted you can't have upstarted they can't have upstarted	I can't have been upstarting you can't have been upstarting he can't have been upstarting we can't have been upstarting you can't have been upstarting they can't have been upstarting

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I upstart? can't you upstart? can't he upstart? can't we upstart? can't you upstart? can't they upstart?	can't I be upstarting? can't you be upstarting? can't he be upstarting? can't we be upstarting? can't you be upstarting? can't they be upstarting?
Perfect	V-ing perfect
can't I have upstarted? can't you have upstarted? can't he have upstarted? can't we have upstarted? can't you have upstarted? can't they have upstarted?	can't I have been upstarting? can't you have been upstarting? can't he have been upstarting? can't we have been upstarting? can't you have been upstarting? can't they have been upstarting?