can flail
Regular verb: flail - flailed- flailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can flail
you can flail
she can flail
we can flail
you can flail
they can flail 	I can be flailing
you can be flailing
she can be flailing
we can be flailing
you can be flailing
they can be flailing	I can have flailed
you can have flailed
she can have flailed
we can have flailed
you can have flailed
they can have flailed	I can have been flailing
you can have been flailing
she can have been flailing
we can have been flailing
you can have been flailing
they can have been flailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot flail
you cannot flail
she cannot flail
we cannot flail
you cannot flail
they cannot flail 	I cannot be flailing
you cannot be flailing
she cannot be flailing
we cannot be flailing
you cannot be flailing
they cannot be flailing	I cannot have flailed
you cannot have flailed
she cannot have flailed
we cannot have flailed
you cannot have flailed
they cannot have flailed	I cannot have been flailing
you cannot have been flailing
she cannot have been flailing
we cannot have been flailing
you cannot have been flailing
they cannot have been flailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I flail?
can you flail?
can she flail?
can we flail?
can you flail?
can they flail? 	can I be flailing?
can you be flailing?
can she be flailing?
can we be flailing?
can you be flailing?
can they be flailing? 	can I have flailed?
can you have flailed?
can she have flailed?
can we have flailed?
can you have flailed?
can they have flailed? 	can I have been flailing?
can you have been flailing?
can she have been flailing?
can we have been flailing?
can you have been flailing?
can they have been flailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not flail?
can you not flail?
can she not flail?
can we not flail?
can you not flail?
can they not flail? 	can I not be flailing?
can you not be flailing?
can she not be flailing?
can we not be flailing?
can you not be flailing?
can they not be flailing? 	can I not have flailed?
can you not have flailed?
can she not have flailed?
can we not have flailed?
can you not have flailed?
can they not have flailed? 	can I not have been flailing?
can you not have been flailing?
can she not have been flailing?
can we not have been flailing?
can you not have been flailing?
can they not have been flailing?