I can substitute you can substitute he can substitute we can substitute you can substitute they can substitute
Forme en V-ing
I can be substituting you can be substituting he can be substituting we can be substituting you can be substituting they can be substituting
Perfect
I can have substituted you can have substituted he can have substituted we can have substituted you can have substituted they can have substituted
Perfect en V-ing
I can have been substituting you can have been substituting he can have been substituting we can have been substituting you can have been substituting they can have been substituting
Négation
Forme simple
I cannot substitute you cannot substitute he cannot substitute we cannot substitute you cannot substitute they cannot substitute
Forme en V-ing
I cannot be substituting you cannot be substituting he cannot be substituting we cannot be substituting you cannot be substituting they cannot be substituting
Perfect
I cannot have substituted you cannot have substituted he cannot have substituted we cannot have substituted you cannot have substituted they cannot have substituted
Perfect en V-ing
I cannot have been substituting you cannot have been substituting he cannot have been substituting we cannot have been substituting you cannot have been substituting they cannot have been substituting
Forme interrogative
Forme simple
can I substitute? can you substitute? can he substitute? can we substitute? can you substitute? can they substitute?
Forme en V-ing
can I be substituting? can you be substituting? can he be substituting? can we be substituting? can you be substituting? can they be substituting?
Perfect
can I have substituted? can you have substituted? can he have substituted? can we have substituted? can you have substituted? can they have substituted?
Perfect en V-ing
can I have been substituting? can you have been substituting? can he have been substituting? can we have been substituting? can you have been substituting? can they have been substituting?
Forme interro-négative
Forme simple
can I not substitute? can you not substitute? can he not substitute? can we not substitute? can you not substitute? can they not substitute?
Forme en V-ing
can I not be substituting? can you not be substituting? can he not be substituting? can we not be substituting? can you not be substituting? can they not be substituting?
Perfect
can I not have substituted? can you not have substituted? can he not have substituted? can we not have substituted? can you not have substituted? can they not have substituted?
Perfect en V-ing
can I not have been substituting? can you not have been substituting? can he not have been substituting? can we not have been substituting? can you not have been substituting? can they not have been substituting?