English verb conjugation
CAN UPCHUCK

Regular verb: upchuck - upchucked - upchucked

Affirmation

Simple form	V-ing form
I can upchuck you can upchuck he can upchuck we can upchuck you can upchuck they can upchuck	I can be upchucking you can be upchucking he can be upchucking we can be upchucking you can be upchucking they can be upchucking
Perfect	V-ing perfect
I can have upchucked you can have upchucked he can have upchucked we can have upchucked you can have upchucked they can have upchucked	I can have been upchucking you can have been upchucking he can have been upchucking we can have been upchucking you can have been upchucking they can have been upchucking

Negation

Simple form	V-ing form
I can't upchuck you can't upchuck he can't upchuck we can't upchuck you can't upchuck they can't upchuck	I can't be upchucking you can't be upchucking he can't be upchucking we can't be upchucking you can't be upchucking they can't be upchucking
Perfect	V-ing perfect
I can't have upchucked you can't have upchucked he can't have upchucked we can't have upchucked you can't have upchucked they can't have upchucked	I can't have been upchucking you can't have been upchucking he can't have been upchucking we can't have been upchucking you can't have been upchucking they can't have been upchucking

Interrogative form

Simple form	V-ing form
can I upchuck? can you upchuck? can he upchuck? can we upchuck? can you upchuck? can they upchuck?	can I be upchucking? can you be upchucking? can he be upchucking? can we be upchucking? can you be upchucking? can they be upchucking?
Perfect	V-ing perfect
can I have upchucked? can you have upchucked? can he have upchucked? can we have upchucked? can you have upchucked? can they have upchucked?	can I have been upchucking? can you have been upchucking? can he have been upchucking? can we have been upchucking? can you have been upchucking? can they have been upchucking?

Interro-negative form

Simple form	V-ing form
can't I upchuck? can't you upchuck? can't he upchuck? can't we upchuck? can't you upchuck? can't they upchuck?	can't I be upchucking? can't you be upchucking? can't he be upchucking? can't we be upchucking? can't you be upchucking? can't they be upchucking?
Perfect	V-ing perfect
can't I have upchucked? can't you have upchucked? can't he have upchucked? can't we have upchucked? can't you have upchucked? can't they have upchucked?	can't I have been upchucking? can't you have been upchucking? can't he have been upchucking? can't we have been upchucking? can't you have been upchucking? can't they have been upchucking?