I can welter you can welter she can welter we can welter you can welter they can welter
Forme en V-ing
I can be weltering you can be weltering she can be weltering we can be weltering you can be weltering they can be weltering
Perfect
I can have weltered you can have weltered she can have weltered we can have weltered you can have weltered they can have weltered
Perfect en V-ing
I can have been weltering you can have been weltering she can have been weltering we can have been weltering you can have been weltering they can have been weltering
Négation
Forme simple
I can't welter you can't welter she can't welter we can't welter you can't welter they can't welter
Forme en V-ing
I can't be weltering you can't be weltering she can't be weltering we can't be weltering you can't be weltering they can't be weltering
Perfect
I can't have weltered you can't have weltered she can't have weltered we can't have weltered you can't have weltered they can't have weltered
Perfect en V-ing
I can't have been weltering you can't have been weltering she can't have been weltering we can't have been weltering you can't have been weltering they can't have been weltering
Forme interrogative
Forme simple
can I welter? can you welter? can she welter? can we welter? can you welter? can they welter?
Forme en V-ing
can I be weltering? can you be weltering? can she be weltering? can we be weltering? can you be weltering? can they be weltering?
Perfect
can I have weltered? can you have weltered? can she have weltered? can we have weltered? can you have weltered? can they have weltered?
Perfect en V-ing
can I have been weltering? can you have been weltering? can she have been weltering? can we have been weltering? can you have been weltering? can they have been weltering?
Forme interro-négative
Forme simple
can't I welter? can't you welter? can't she welter? can't we welter? can't you welter? can't they welter?
Forme en V-ing
can't I be weltering? can't you be weltering? can't she be weltering? can't we be weltering? can't you be weltering? can't they be weltering?
Perfect
can't I have weltered? can't you have weltered? can't she have weltered? can't we have weltered? can't you have weltered? can't they have weltered?
Perfect en V-ing
can't I have been weltering? can't you have been weltering? can't she have been weltering? can't we have been weltering? can't you have been weltering? can't they have been weltering?