I can decrease you can decrease she can decrease we can decrease you can decrease they can decrease
Forme en V-ing
I can be decreasing you can be decreasing she can be decreasing we can be decreasing you can be decreasing they can be decreasing
Perfect
I can have decreased you can have decreased she can have decreased we can have decreased you can have decreased they can have decreased
Perfect en V-ing
I can have been decreasing you can have been decreasing she can have been decreasing we can have been decreasing you can have been decreasing they can have been decreasing
Négation
Forme simple
I can't decrease you can't decrease she can't decrease we can't decrease you can't decrease they can't decrease
Forme en V-ing
I can't be decreasing you can't be decreasing she can't be decreasing we can't be decreasing you can't be decreasing they can't be decreasing
Perfect
I can't have decreased you can't have decreased she can't have decreased we can't have decreased you can't have decreased they can't have decreased
Perfect en V-ing
I can't have been decreasing you can't have been decreasing she can't have been decreasing we can't have been decreasing you can't have been decreasing they can't have been decreasing
Forme interrogative
Forme simple
can I decrease? can you decrease? can she decrease? can we decrease? can you decrease? can they decrease?
Forme en V-ing
can I be decreasing? can you be decreasing? can she be decreasing? can we be decreasing? can you be decreasing? can they be decreasing?
Perfect
can I have decreased? can you have decreased? can she have decreased? can we have decreased? can you have decreased? can they have decreased?
Perfect en V-ing
can I have been decreasing? can you have been decreasing? can she have been decreasing? can we have been decreasing? can you have been decreasing? can they have been decreasing?
Forme interro-négative
Forme simple
can't I decrease? can't you decrease? can't she decrease? can't we decrease? can't you decrease? can't they decrease?
Forme en V-ing
can't I be decreasing? can't you be decreasing? can't she be decreasing? can't we be decreasing? can't you be decreasing? can't they be decreasing?
Perfect
can't I have decreased? can't you have decreased? can't she have decreased? can't we have decreased? can't you have decreased? can't they have decreased?
Perfect en V-ing
can't I have been decreasing? can't you have been decreasing? can't she have been decreasing? can't we have been decreasing? can't you have been decreasing? can't they have been decreasing?