can unable
Regular verb: unable - unabled- unabled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can unable
you can unable
he can unable
we can unable
you can unable
they can unable 	I can be unabling
you can be unabling
he can be unabling
we can be unabling
you can be unabling
they can be unabling	I can have unabled
you can have unabled
he can have unabled
we can have unabled
you can have unabled
they can have unabled	I can have been unabling
you can have been unabling
he can have been unabling
we can have been unabling
you can have been unabling
they can have been unabling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot unable
you cannot unable
he cannot unable
we cannot unable
you cannot unable
they cannot unable 	I cannot be unabling
you cannot be unabling
he cannot be unabling
we cannot be unabling
you cannot be unabling
they cannot be unabling	I cannot have unabled
you cannot have unabled
he cannot have unabled
we cannot have unabled
you cannot have unabled
they cannot have unabled	I cannot have been unabling
you cannot have been unabling
he cannot have been unabling
we cannot have been unabling
you cannot have been unabling
they cannot have been unabling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I unable?
can you unable?
can he unable?
can we unable?
can you unable?
can they unable? 	can I be unabling?
can you be unabling?
can he be unabling?
can we be unabling?
can you be unabling?
can they be unabling? 	can I have unabled?
can you have unabled?
can he have unabled?
can we have unabled?
can you have unabled?
can they have unabled? 	can I have been unabling?
can you have been unabling?
can he have been unabling?
can we have been unabling?
can you have been unabling?
can they have been unabling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not unable?
can you not unable?
can he not unable?
can we not unable?
can you not unable?
can they not unable? 	can I not be unabling?
can you not be unabling?
can he not be unabling?
can we not be unabling?
can you not be unabling?
can they not be unabling? 	can I not have unabled?
can you not have unabled?
can he not have unabled?
can we not have unabled?
can you not have unabled?
can they not have unabled? 	can I not have been unabling?
can you not have been unabling?
can he not have been unabling?
can we not have been unabling?
can you not have been unabling?
can they not have been unabling?