can fishtail
Regular verb: fishtail - fishtailed- fishtailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fishtail
you can fishtail
she can fishtail
we can fishtail
you can fishtail
they can fishtail 	I can be fishtailing
you can be fishtailing
she can be fishtailing
we can be fishtailing
you can be fishtailing
they can be fishtailing	I can have fishtailed
you can have fishtailed
she can have fishtailed
we can have fishtailed
you can have fishtailed
they can have fishtailed	I can have been fishtailing
you can have been fishtailing
she can have been fishtailing
we can have been fishtailing
you can have been fishtailing
they can have been fishtailing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't fishtail
you can't fishtail
she can't fishtail
we can't fishtail
you can't fishtail
they can't fishtail 	I can't be fishtailing
you can't be fishtailing
she can't be fishtailing
we can't be fishtailing
you can't be fishtailing
they can't be fishtailing	I can't have fishtailed
you can't have fishtailed
she can't have fishtailed
we can't have fishtailed
you can't have fishtailed
they can't have fishtailed	I can't have been fishtailing
you can't have been fishtailing
she can't have been fishtailing
we can't have been fishtailing
you can't have been fishtailing
they can't have been fishtailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fishtail?
can you fishtail?
can she fishtail?
can we fishtail?
can you fishtail?
can they fishtail? 	can I be fishtailing?
can you be fishtailing?
can she be fishtailing?
can we be fishtailing?
can you be fishtailing?
can they be fishtailing? 	can I have fishtailed?
can you have fishtailed?
can she have fishtailed?
can we have fishtailed?
can you have fishtailed?
can they have fishtailed? 	can I have been fishtailing?
can you have been fishtailing?
can she have been fishtailing?
can we have been fishtailing?
can you have been fishtailing?
can they have been fishtailing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I fishtail?
can't you fishtail?
can't she fishtail?
can't we fishtail?
can't you fishtail?
can't they fishtail? 	can't I be fishtailing?
can't you be fishtailing?
can't she be fishtailing?
can't we be fishtailing?
can't you be fishtailing?
can't they be fishtailing? 	can't I have fishtailed?
can't you have fishtailed?
can't she have fishtailed?
can't we have fishtailed?
can't you have fishtailed?
can't they have fishtailed? 	can't I have been fishtailing?
can't you have been fishtailing?
can't she have been fishtailing?
can't we have been fishtailing?
can't you have been fishtailing?
can't they have been fishtailing?