I can vacillate you can vacillate he can vacillate we can vacillate you can vacillate they can vacillate
Forme en V-ing
I can be vacillating you can be vacillating he can be vacillating we can be vacillating you can be vacillating they can be vacillating
Perfect
I can have vacillated you can have vacillated he can have vacillated we can have vacillated you can have vacillated they can have vacillated
Perfect en V-ing
I can have been vacillating you can have been vacillating he can have been vacillating we can have been vacillating you can have been vacillating they can have been vacillating
Négation
Forme simple
I can't vacillate you can't vacillate he can't vacillate we can't vacillate you can't vacillate they can't vacillate
Forme en V-ing
I can't be vacillating you can't be vacillating he can't be vacillating we can't be vacillating you can't be vacillating they can't be vacillating
Perfect
I can't have vacillated you can't have vacillated he can't have vacillated we can't have vacillated you can't have vacillated they can't have vacillated
Perfect en V-ing
I can't have been vacillating you can't have been vacillating he can't have been vacillating we can't have been vacillating you can't have been vacillating they can't have been vacillating
Forme interrogative
Forme simple
can I vacillate? can you vacillate? can he vacillate? can we vacillate? can you vacillate? can they vacillate?
Forme en V-ing
can I be vacillating? can you be vacillating? can he be vacillating? can we be vacillating? can you be vacillating? can they be vacillating?
Perfect
can I have vacillated? can you have vacillated? can he have vacillated? can we have vacillated? can you have vacillated? can they have vacillated?
Perfect en V-ing
can I have been vacillating? can you have been vacillating? can he have been vacillating? can we have been vacillating? can you have been vacillating? can they have been vacillating?
Forme interro-négative
Forme simple
can't I vacillate? can't you vacillate? can't he vacillate? can't we vacillate? can't you vacillate? can't they vacillate?
Forme en V-ing
can't I be vacillating? can't you be vacillating? can't he be vacillating? can't we be vacillating? can't you be vacillating? can't they be vacillating?
Perfect
can't I have vacillated? can't you have vacillated? can't he have vacillated? can't we have vacillated? can't you have vacillated? can't they have vacillated?
Perfect en V-ing
can't I have been vacillating? can't you have been vacillating? can't he have been vacillating? can't we have been vacillating? can't you have been vacillating? can't they have been vacillating?