can flub
Regular verb: flub - flubed- flubed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can flub
you can flub
he can flub
we can flub
you can flub
they can flub 	I can be flubing
you can be flubing
he can be flubing
we can be flubing
you can be flubing
they can be flubing	I can have flubed
you can have flubed
he can have flubed
we can have flubed
you can have flubed
they can have flubed	I can have been flubing
you can have been flubing
he can have been flubing
we can have been flubing
you can have been flubing
they can have been flubing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot flub
you cannot flub
he cannot flub
we cannot flub
you cannot flub
they cannot flub 	I cannot be flubing
you cannot be flubing
he cannot be flubing
we cannot be flubing
you cannot be flubing
they cannot be flubing	I cannot have flubed
you cannot have flubed
he cannot have flubed
we cannot have flubed
you cannot have flubed
they cannot have flubed	I cannot have been flubing
you cannot have been flubing
he cannot have been flubing
we cannot have been flubing
you cannot have been flubing
they cannot have been flubing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I flub?
can you flub?
can he flub?
can we flub?
can you flub?
can they flub? 	can I be flubing?
can you be flubing?
can he be flubing?
can we be flubing?
can you be flubing?
can they be flubing? 	can I have flubed?
can you have flubed?
can he have flubed?
can we have flubed?
can you have flubed?
can they have flubed? 	can I have been flubing?
can you have been flubing?
can he have been flubing?
can we have been flubing?
can you have been flubing?
can they have been flubing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not flub?
can you not flub?
can he not flub?
can we not flub?
can you not flub?
can they not flub? 	can I not be flubing?
can you not be flubing?
can he not be flubing?
can we not be flubing?
can you not be flubing?
can they not be flubing? 	can I not have flubed?
can you not have flubed?
can he not have flubed?
can we not have flubed?
can you not have flubed?
can they not have flubed? 	can I not have been flubing?
can you not have been flubing?
can he not have been flubing?
can we not have been flubing?
can you not have been flubing?
can they not have been flubing?