can scrub
Regular verb: scrub - scrubbed- scrubbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can scrub
you can scrub
he can scrub
we can scrub
you can scrub
they can scrub 	I can be scrubbing
you can be scrubbing
he can be scrubbing
we can be scrubbing
you can be scrubbing
they can be scrubbing	I can have scrubbed
you can have scrubbed
he can have scrubbed
we can have scrubbed
you can have scrubbed
they can have scrubbed	I can have been scrubbing
you can have been scrubbing
he can have been scrubbing
we can have been scrubbing
you can have been scrubbing
they can have been scrubbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't scrub
you can't scrub
he can't scrub
we can't scrub
you can't scrub
they can't scrub 	I can't be scrubbing
you can't be scrubbing
he can't be scrubbing
we can't be scrubbing
you can't be scrubbing
they can't be scrubbing	I can't have scrubbed
you can't have scrubbed
he can't have scrubbed
we can't have scrubbed
you can't have scrubbed
they can't have scrubbed	I can't have been scrubbing
you can't have been scrubbing
he can't have been scrubbing
we can't have been scrubbing
you can't have been scrubbing
they can't have been scrubbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I scrub?
can you scrub?
can he scrub?
can we scrub?
can you scrub?
can they scrub? 	can I be scrubbing?
can you be scrubbing?
can he be scrubbing?
can we be scrubbing?
can you be scrubbing?
can they be scrubbing? 	can I have scrubbed?
can you have scrubbed?
can he have scrubbed?
can we have scrubbed?
can you have scrubbed?
can they have scrubbed? 	can I have been scrubbing?
can you have been scrubbing?
can he have been scrubbing?
can we have been scrubbing?
can you have been scrubbing?
can they have been scrubbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I scrub?
can't you scrub?
can't he scrub?
can't we scrub?
can't you scrub?
can't they scrub? 	can't I be scrubbing?
can't you be scrubbing?
can't he be scrubbing?
can't we be scrubbing?
can't you be scrubbing?
can't they be scrubbing? 	can't I have scrubbed?
can't you have scrubbed?
can't he have scrubbed?
can't we have scrubbed?
can't you have scrubbed?
can't they have scrubbed? 	can't I have been scrubbing?
can't you have been scrubbing?
can't he have been scrubbing?
can't we have been scrubbing?
can't you have been scrubbing?
can't they have been scrubbing?