can piffle
Regular verb: piffle - piffled- piffled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can piffle
you can piffle
she can piffle
we can piffle
you can piffle
they can piffle 	I can be piffling
you can be piffling
she can be piffling
we can be piffling
you can be piffling
they can be piffling	I can have piffled
you can have piffled
she can have piffled
we can have piffled
you can have piffled
they can have piffled	I can have been piffling
you can have been piffling
she can have been piffling
we can have been piffling
you can have been piffling
they can have been piffling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot piffle
you cannot piffle
she cannot piffle
we cannot piffle
you cannot piffle
they cannot piffle 	I cannot be piffling
you cannot be piffling
she cannot be piffling
we cannot be piffling
you cannot be piffling
they cannot be piffling	I cannot have piffled
you cannot have piffled
she cannot have piffled
we cannot have piffled
you cannot have piffled
they cannot have piffled	I cannot have been piffling
you cannot have been piffling
she cannot have been piffling
we cannot have been piffling
you cannot have been piffling
they cannot have been piffling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I piffle?
can you piffle?
can she piffle?
can we piffle?
can you piffle?
can they piffle? 	can I be piffling?
can you be piffling?
can she be piffling?
can we be piffling?
can you be piffling?
can they be piffling? 	can I have piffled?
can you have piffled?
can she have piffled?
can we have piffled?
can you have piffled?
can they have piffled? 	can I have been piffling?
can you have been piffling?
can she have been piffling?
can we have been piffling?
can you have been piffling?
can they have been piffling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not piffle?
can you not piffle?
can she not piffle?
can we not piffle?
can you not piffle?
can they not piffle? 	can I not be piffling?
can you not be piffling?
can she not be piffling?
can we not be piffling?
can you not be piffling?
can they not be piffling? 	can I not have piffled?
can you not have piffled?
can she not have piffled?
can we not have piffled?
can you not have piffled?
can they not have piffled? 	can I not have been piffling?
can you not have been piffling?
can she not have been piffling?
can we not have been piffling?
can you not have been piffling?
can they not have been piffling?