can specialize
Regular verb: specialize - specialized- specialized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can specialize
you can specialize
she can specialize
we can specialize
you can specialize
they can specialize 	I can be specializing
you can be specializing
she can be specializing
we can be specializing
you can be specializing
they can be specializing	I can have specialized
you can have specialized
she can have specialized
we can have specialized
you can have specialized
they can have specialized	I can have been specializing
you can have been specializing
she can have been specializing
we can have been specializing
you can have been specializing
they can have been specializing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't specialize
you can't specialize
she can't specialize
we can't specialize
you can't specialize
they can't specialize 	I can't be specializing
you can't be specializing
she can't be specializing
we can't be specializing
you can't be specializing
they can't be specializing	I can't have specialized
you can't have specialized
she can't have specialized
we can't have specialized
you can't have specialized
they can't have specialized	I can't have been specializing
you can't have been specializing
she can't have been specializing
we can't have been specializing
you can't have been specializing
they can't have been specializing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I specialize?
can you specialize?
can she specialize?
can we specialize?
can you specialize?
can they specialize? 	can I be specializing?
can you be specializing?
can she be specializing?
can we be specializing?
can you be specializing?
can they be specializing? 	can I have specialized?
can you have specialized?
can she have specialized?
can we have specialized?
can you have specialized?
can they have specialized? 	can I have been specializing?
can you have been specializing?
can she have been specializing?
can we have been specializing?
can you have been specializing?
can they have been specializing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I specialize?
can't you specialize?
can't she specialize?
can't we specialize?
can't you specialize?
can't they specialize? 	can't I be specializing?
can't you be specializing?
can't she be specializing?
can't we be specializing?
can't you be specializing?
can't they be specializing? 	can't I have specialized?
can't you have specialized?
can't she have specialized?
can't we have specialized?
can't you have specialized?
can't they have specialized? 	can't I have been specializing?
can't you have been specializing?
can't she have been specializing?
can't we have been specializing?
can't you have been specializing?
can't they have been specializing?