can scab
Regular verb: scab - scabbed- scabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can scab
you can scab
she can scab
we can scab
you can scab
they can scab 	I can be scabbing
you can be scabbing
she can be scabbing
we can be scabbing
you can be scabbing
they can be scabbing	I can have scabbed
you can have scabbed
she can have scabbed
we can have scabbed
you can have scabbed
they can have scabbed	I can have been scabbing
you can have been scabbing
she can have been scabbing
we can have been scabbing
you can have been scabbing
they can have been scabbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't scab
you can't scab
she can't scab
we can't scab
you can't scab
they can't scab 	I can't be scabbing
you can't be scabbing
she can't be scabbing
we can't be scabbing
you can't be scabbing
they can't be scabbing	I can't have scabbed
you can't have scabbed
she can't have scabbed
we can't have scabbed
you can't have scabbed
they can't have scabbed	I can't have been scabbing
you can't have been scabbing
she can't have been scabbing
we can't have been scabbing
you can't have been scabbing
they can't have been scabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I scab?
can you scab?
can she scab?
can we scab?
can you scab?
can they scab? 	can I be scabbing?
can you be scabbing?
can she be scabbing?
can we be scabbing?
can you be scabbing?
can they be scabbing? 	can I have scabbed?
can you have scabbed?
can she have scabbed?
can we have scabbed?
can you have scabbed?
can they have scabbed? 	can I have been scabbing?
can you have been scabbing?
can she have been scabbing?
can we have been scabbing?
can you have been scabbing?
can they have been scabbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I scab?
can't you scab?
can't she scab?
can't we scab?
can't you scab?
can't they scab? 	can't I be scabbing?
can't you be scabbing?
can't she be scabbing?
can't we be scabbing?
can't you be scabbing?
can't they be scabbing? 	can't I have scabbed?
can't you have scabbed?
can't she have scabbed?
can't we have scabbed?
can't you have scabbed?
can't they have scabbed? 	can't I have been scabbing?
can't you have been scabbing?
can't she have been scabbing?
can't we have been scabbing?
can't you have been scabbing?
can't they have been scabbing?