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 cannot upchuck you cannot upchuck he cannot upchuck we cannot upchuck you cannot upchuck they cannot upchuck	I cannot be upchucking you cannot be upchucking he cannot be upchucking we cannot be upchucking you cannot be upchucking they cannot be upchucking
Perfect	V-ing perfect
I cannot have upchucked you cannot have upchucked he cannot have upchucked we cannot have upchucked you cannot have upchucked they cannot have upchucked	I cannot have been upchucking you cannot have been upchucking he cannot have been upchucking we cannot have been upchucking you cannot have been upchucking they cannot 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 I not upchuck? can you not upchuck? can he not upchuck? can we not upchuck? can you not upchuck? can they not upchuck?	can I not be upchucking? can you not be upchucking? can he not be upchucking? can we not be upchucking? can you not be upchucking? can they not be upchucking?
Perfect	V-ing perfect
can I not have upchucked? can you not have upchucked? can he not have upchucked? can we not have upchucked? can you not have upchucked? can they not have upchucked?	can I not have been upchucking? can you not have been upchucking? can he not have been upchucking? can we not have been upchucking? can you not have been upchucking? can they not have been upchucking?