English verb conjugation
CAN UNJAM

Regular verb: unjam - unjamed - unjamed

Affirmation

Simple form	V-ing form
I can unjam you can unjam he can unjam we can unjam you can unjam they can unjam	I can be unjaming you can be unjaming he can be unjaming we can be unjaming you can be unjaming they can be unjaming
Perfect	V-ing perfect
I can have unjamed you can have unjamed he can have unjamed we can have unjamed you can have unjamed they can have unjamed	I can have been unjaming you can have been unjaming he can have been unjaming we can have been unjaming you can have been unjaming they can have been unjaming

Negation

Simple form	V-ing form
I can't unjam you can't unjam he can't unjam we can't unjam you can't unjam they can't unjam	I can't be unjaming you can't be unjaming he can't be unjaming we can't be unjaming you can't be unjaming they can't be unjaming
Perfect	V-ing perfect
I can't have unjamed you can't have unjamed he can't have unjamed we can't have unjamed you can't have unjamed they can't have unjamed	I can't have been unjaming you can't have been unjaming he can't have been unjaming we can't have been unjaming you can't have been unjaming they can't have been unjaming

Interrogative form

Simple form	V-ing form
can I unjam? can you unjam? can he unjam? can we unjam? can you unjam? can they unjam?	can I be unjaming? can you be unjaming? can he be unjaming? can we be unjaming? can you be unjaming? can they be unjaming?
Perfect	V-ing perfect
can I have unjamed? can you have unjamed? can he have unjamed? can we have unjamed? can you have unjamed? can they have unjamed?	can I have been unjaming? can you have been unjaming? can he have been unjaming? can we have been unjaming? can you have been unjaming? can they have been unjaming?

Interro-negative form

Simple form	V-ing form
can't I unjam? can't you unjam? can't he unjam? can't we unjam? can't you unjam? can't they unjam?	can't I be unjaming? can't you be unjaming? can't he be unjaming? can't we be unjaming? can't you be unjaming? can't they be unjaming?
Perfect	V-ing perfect
can't I have unjamed? can't you have unjamed? can't he have unjamed? can't we have unjamed? can't you have unjamed? can't they have unjamed?	can't I have been unjaming? can't you have been unjaming? can't he have been unjaming? can't we have been unjaming? can't you have been unjaming? can't they have been unjaming?