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