I may catalyse you may catalyse he may catalyse we may catalyse you may catalyse they may catalyse
Forme en V-ing
I may be catalysing you may be catalysing he may be catalysing we may be catalysing you may be catalysing they may be catalysing
Perfect
I may have catalysed you may have catalysed he may have catalysed we may have catalysed you may have catalysed they may have catalysed
Perfect en V-ing
I may have been catalysing you may have been catalysing he may have been catalysing we may have been catalysing you may have been catalysing they may have been catalysing
Négation
Forme simple
I may not catalyse you may not catalyse he may not catalyse we may not catalyse you may not catalyse they may not catalyse
Forme en V-ing
I may not be catalysing you may not be catalysing he may not be catalysing we may not be catalysing you may not be catalysing they may not be catalysing
Perfect
I may not have catalysed you may not have catalysed he may not have catalysed we may not have catalysed you may not have catalysed they may not have catalysed
Perfect en V-ing
I may not have been catalysing you may not have been catalysing he may not have been catalysing we may not have been catalysing you may not have been catalysing they may not have been catalysing
Forme interrogative
Forme simple
may I catalyse? may you catalyse? may he catalyse? may we catalyse? may you catalyse? may they catalyse?
Forme en V-ing
may I be catalysing? may you be catalysing? may he be catalysing? may we be catalysing? may you be catalysing? may they be catalysing?
Perfect
may I have catalysed? may you have catalysed? may he have catalysed? may we have catalysed? may you have catalysed? may they have catalysed?
Perfect en V-ing
may I have been catalysing? may you have been catalysing? may he have been catalysing? may we have been catalysing? may you have been catalysing? may they have been catalysing?
Forme interro-négative
Forme simple
may I not catalyse? may you not catalyse? may he not catalyse? may we not catalyse? may you not catalyse? may they not catalyse?
Forme en V-ing
may I not be catalysing? may you not be catalysing? may he not be catalysing? may we not be catalysing? may you not be catalysing? may they not be catalysing?
Perfect
may I not have catalysed? may you not have catalysed? may he not have catalysed? may we not have catalysed? may you not have catalysed? may they not have catalysed?
Perfect en V-ing
may I not have been catalysing? may you not have been catalysing? may he not have been catalysing? may we not have been catalysing? may you not have been catalysing? may they not have been catalysing?