English verb conjugation
CAN FISHTAIL

Regular verb: fishtail - fishtailed - fishtailed

Affirmation

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