can dummy
Regular verb: dummy - dummied- dummied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can dummy
you can dummy
he can dummy
we can dummy
you can dummy
they can dummy 	I can be dummying
you can be dummying
he can be dummying
we can be dummying
you can be dummying
they can be dummying	I can have dummied
you can have dummied
he can have dummied
we can have dummied
you can have dummied
they can have dummied	I can have been dummying
you can have been dummying
he can have been dummying
we can have been dummying
you can have been dummying
they can have been dummying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't dummy
you can't dummy
he can't dummy
we can't dummy
you can't dummy
they can't dummy 	I can't be dummying
you can't be dummying
he can't be dummying
we can't be dummying
you can't be dummying
they can't be dummying	I can't have dummied
you can't have dummied
he can't have dummied
we can't have dummied
you can't have dummied
they can't have dummied	I can't have been dummying
you can't have been dummying
he can't have been dummying
we can't have been dummying
you can't have been dummying
they can't have been dummying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I dummy?
can you dummy?
can he dummy?
can we dummy?
can you dummy?
can they dummy? 	can I be dummying?
can you be dummying?
can he be dummying?
can we be dummying?
can you be dummying?
can they be dummying? 	can I have dummied?
can you have dummied?
can he have dummied?
can we have dummied?
can you have dummied?
can they have dummied? 	can I have been dummying?
can you have been dummying?
can he have been dummying?
can we have been dummying?
can you have been dummying?
can they have been dummying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I dummy?
can't you dummy?
can't he dummy?
can't we dummy?
can't you dummy?
can't they dummy? 	can't I be dummying?
can't you be dummying?
can't he be dummying?
can't we be dummying?
can't you be dummying?
can't they be dummying? 	can't I have dummied?
can't you have dummied?
can't he have dummied?
can't we have dummied?
can't you have dummied?
can't they have dummied? 	can't I have been dummying?
can't you have been dummying?
can't he have been dummying?
can't we have been dummying?
can't you have been dummying?
can't they have been dummying?