English verb conjugation
CAN UNSTOP

Regular verb: unstop - unstopped - unstopped

Affirmation

Simple form	V-ing form
I can unstop you can unstop he can unstop we can unstop you can unstop they can unstop	I can be unstopping you can be unstopping he can be unstopping we can be unstopping you can be unstopping they can be unstopping
Perfect	V-ing perfect
I can have unstopped you can have unstopped he can have unstopped we can have unstopped you can have unstopped they can have unstopped	I can have been unstopping you can have been unstopping he can have been unstopping we can have been unstopping you can have been unstopping they can have been unstopping

Negation

Simple form	V-ing form
I can't unstop you can't unstop he can't unstop we can't unstop you can't unstop they can't unstop	I can't be unstopping you can't be unstopping he can't be unstopping we can't be unstopping you can't be unstopping they can't be unstopping
Perfect	V-ing perfect
I can't have unstopped you can't have unstopped he can't have unstopped we can't have unstopped you can't have unstopped they can't have unstopped	I can't have been unstopping you can't have been unstopping he can't have been unstopping we can't have been unstopping you can't have been unstopping they can't have been unstopping

Interrogative form

Simple form	V-ing form
can I unstop? can you unstop? can he unstop? can we unstop? can you unstop? can they unstop?	can I be unstopping? can you be unstopping? can he be unstopping? can we be unstopping? can you be unstopping? can they be unstopping?
Perfect	V-ing perfect
can I have unstopped? can you have unstopped? can he have unstopped? can we have unstopped? can you have unstopped? can they have unstopped?	can I have been unstopping? can you have been unstopping? can he have been unstopping? can we have been unstopping? can you have been unstopping? can they have been unstopping?

Interro-negative form

Simple form	V-ing form
can't I unstop? can't you unstop? can't he unstop? can't we unstop? can't you unstop? can't they unstop?	can't I be unstopping? can't you be unstopping? can't he be unstopping? can't we be unstopping? can't you be unstopping? can't they be unstopping?
Perfect	V-ing perfect
can't I have unstopped? can't you have unstopped? can't he have unstopped? can't we have unstopped? can't you have unstopped? can't they have unstopped?	can't I have been unstopping? can't you have been unstopping? can't he have been unstopping? can't we have been unstopping? can't you have been unstopping? can't they have been unstopping?