must fishtail
Verbe régulier : fishtail - fishtailed- fishtailed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must fishtail
you must fishtail
she must fishtail
we must fishtail
you must fishtail
they must fishtail 	I must be fishtailing
you must be fishtailing
she must be fishtailing
we must be fishtailing
you must be fishtailing
they must be fishtailing	I must have fishtailed
you must have fishtailed
she must have fishtailed
we must have fishtailed
you must have fishtailed
they must have fishtailed	I must have been fishtailing
you must have been fishtailing
she must have been fishtailing
we must have been fishtailing
you must have been fishtailing
they must have been fishtailing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not fishtail
you must not fishtail
she must not fishtail
we must not fishtail
you must not fishtail
they must not fishtail 	I must not be fishtailing
you must not be fishtailing
she must not be fishtailing
we must not be fishtailing
you must not be fishtailing
they must not be fishtailing	I must not have fishtailed
you must not have fishtailed
she must not have fishtailed
we must not have fishtailed
you must not have fishtailed
they must not have fishtailed	I must not have been fishtailing
you must not have been fishtailing
she must not have been fishtailing
we must not have been fishtailing
you must not have been fishtailing
they must not have been fishtailing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I fishtail?
must you fishtail?
must she fishtail?
must we fishtail?
must you fishtail?
must they fishtail? 	must I be fishtailing?
must you be fishtailing?
must she be fishtailing?
must we be fishtailing?
must you be fishtailing?
must they be fishtailing? 	must I have fishtailed?
must you have fishtailed?
must she have fishtailed?
must we have fishtailed?
must you have fishtailed?
must they have fishtailed? 	must I have been fishtailing?
must you have been fishtailing?
must she have been fishtailing?
must we have been fishtailing?
must you have been fishtailing?
must they have been fishtailing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not fishtail?
must you not fishtail?
must she not fishtail?
must we not fishtail?
must you not fishtail?
must they not fishtail? 	must I not be fishtailing?
must you not be fishtailing?
must she not be fishtailing?
must we not be fishtailing?
must you not be fishtailing?
must they not be fishtailing? 	must I not have fishtailed?
must you not have fishtailed?
must she not have fishtailed?
must we not have fishtailed?
must you not have fishtailed?
must they not have fishtailed? 	must I not have been fishtailing?
must you not have been fishtailing?
must she not have been fishtailing?
must we not have been fishtailing?
must you not have been fishtailing?
must they not have been fishtailing?