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 can't flail
you can't flail
she can't flail
we can't flail
you can't flail
they can't flail 	I can't be flailing
you can't be flailing
she can't be flailing
we can't be flailing
you can't be flailing
they can't be flailing	I can't have flailed
you can't have flailed
she can't have flailed
we can't have flailed
you can't have flailed
they can't have flailed	I can't have been flailing
you can't have been flailing
she can't have been flailing
we can't have been flailing
you can't have been flailing
they can't 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't I flail?
can't you flail?
can't she flail?
can't we flail?
can't you flail?
can't they flail? 	can't I be flailing?
can't you be flailing?
can't she be flailing?
can't we be flailing?
can't you be flailing?
can't they be flailing? 	can't I have flailed?
can't you have flailed?
can't she have flailed?
can't we have flailed?
can't you have flailed?
can't they have flailed? 	can't I have been flailing?
can't you have been flailing?
can't she have been flailing?
can't we have been flailing?
can't you have been flailing?
can't they have been flailing?