I may countersign you may countersign she may countersign we may countersign you may countersign they may countersign
Forme en V-ing
I may be countersigning you may be countersigning she may be countersigning we may be countersigning you may be countersigning they may be countersigning
Perfect
I may have countersigned you may have countersigned she may have countersigned we may have countersigned you may have countersigned they may have countersigned
Perfect en V-ing
I may have been countersigning you may have been countersigning she may have been countersigning we may have been countersigning you may have been countersigning they may have been countersigning
Négation
Forme simple
I may not countersign you may not countersign she may not countersign we may not countersign you may not countersign they may not countersign
Forme en V-ing
I may not be countersigning you may not be countersigning she may not be countersigning we may not be countersigning you may not be countersigning they may not be countersigning
Perfect
I may not have countersigned you may not have countersigned she may not have countersigned we may not have countersigned you may not have countersigned they may not have countersigned
Perfect en V-ing
I may not have been countersigning you may not have been countersigning she may not have been countersigning we may not have been countersigning you may not have been countersigning they may not have been countersigning
Forme interrogative
Forme simple
may I countersign? may you countersign? may she countersign? may we countersign? may you countersign? may they countersign?
Forme en V-ing
may I be countersigning? may you be countersigning? may she be countersigning? may we be countersigning? may you be countersigning? may they be countersigning?
Perfect
may I have countersigned? may you have countersigned? may she have countersigned? may we have countersigned? may you have countersigned? may they have countersigned?
Perfect en V-ing
may I have been countersigning? may you have been countersigning? may she have been countersigning? may we have been countersigning? may you have been countersigning? may they have been countersigning?
Forme interro-négative
Forme simple
may I not countersign? may you not countersign? may she not countersign? may we not countersign? may you not countersign? may they not countersign?
Forme en V-ing
may I not be countersigning? may you not be countersigning? may she not be countersigning? may we not be countersigning? may you not be countersigning? may they not be countersigning?
Perfect
may I not have countersigned? may you not have countersigned? may she not have countersigned? may we not have countersigned? may you not have countersigned? may they not have countersigned?
Perfect en V-ing
may I not have been countersigning? may you not have been countersigning? may she not have been countersigning? may we not have been countersigning? may you not have been countersigning? may they not have been countersigning?