can fishtail
Regular verb: fishtail - fishtailed- fishtailed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can fishtail
you can fishtail
he can fishtail
we can fishtail
you can fishtail
they can fishtail 	I can be fishtailing
you can be fishtailing
he can be fishtailing
we can be fishtailing
you can be fishtailing
they can be fishtailing	I can have fishtailed
you can have fishtailed
he 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
he 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 cannot fishtail
you cannot fishtail
he cannot fishtail
we cannot fishtail
you cannot fishtail
they cannot fishtail 	I cannot be fishtailing
you cannot be fishtailing
he cannot be fishtailing
we cannot be fishtailing
you cannot be fishtailing
they cannot be fishtailing	I cannot have fishtailed
you cannot have fishtailed
he cannot have fishtailed
we cannot have fishtailed
you cannot have fishtailed
they cannot have fishtailed	I cannot have been fishtailing
you cannot have been fishtailing
he cannot have been fishtailing
we cannot have been fishtailing
you cannot have been fishtailing
they cannot have been fishtailing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I fishtail?
can you fishtail?
can he fishtail?
can we fishtail?
can you fishtail?
can they fishtail? 	can I be fishtailing?
can you be fishtailing?
can he be fishtailing?
can we be fishtailing?
can you be fishtailing?
can they be fishtailing? 	can I have fishtailed?
can you have fishtailed?
can he 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 he 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 I not fishtail?
can you not fishtail?
can he not fishtail?
can we not fishtail?
can you not fishtail?
can they not fishtail? 	can I not be fishtailing?
can you not be fishtailing?
can he not be fishtailing?
can we not be fishtailing?
can you not be fishtailing?
can they not be fishtailing? 	can I not have fishtailed?
can you not have fishtailed?
can he not have fishtailed?
can we not have fishtailed?
can you not have fishtailed?
can they not have fishtailed? 	can I not have been fishtailing?
can you not have been fishtailing?
can he not have been fishtailing?
can we not have been fishtailing?
can you not have been fishtailing?
can they not have been fishtailing?