may countersign
Verbo regolare: countersign - countersigned- countersigned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I may countersign
you may countersign
he may countersign
we may countersign
you may countersign
they may countersign 	I may be countersigning
you may be countersigning
he may be countersigning
we may be countersigning
you may be countersigning
they may be countersigning	I may have countersigned
you may have countersigned
he may have countersigned
we may have countersigned
you may have countersigned
they may have countersigned	I may have been countersigning
you may have been countersigning
he may have been countersigning
we may have been countersigning
you may have been countersigning
they may have been countersigning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mayn't countersign
you mayn't countersign
he mayn't countersign
we mayn't countersign
you mayn't countersign
they mayn't countersign 	I mayn't be countersigning
you mayn't be countersigning
he mayn't be countersigning
we mayn't be countersigning
you mayn't be countersigning
they mayn't be countersigning	I mayn't have countersigned
you mayn't have countersigned
he mayn't have countersigned
we mayn't have countersigned
you mayn't have countersigned
they mayn't have countersigned	I mayn't have been countersigning
you mayn't have been countersigning
he mayn't have been countersigning
we mayn't have been countersigning
you mayn't have been countersigning
they mayn't have been countersigning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
may I countersign?
may you countersign?
may he countersign?
may we countersign?
may you countersign?
may they countersign? 	may I be countersigning?
may you be countersigning?
may he be countersigning?
may we be countersigning?
may you be countersigning?
may they be countersigning? 	may I have countersigned?
may you have countersigned?
may he have countersigned?
may we have countersigned?
may you have countersigned?
may they have countersigned? 	may I have been countersigning?
may you have been countersigning?
may he have been countersigning?
may we have been countersigning?
may you have been countersigning?
may they have been countersigning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mayn't I countersign?
mayn't you countersign?
mayn't he countersign?
mayn't we countersign?
mayn't you countersign?
mayn't they countersign? 	mayn't I be countersigning?
mayn't you be countersigning?
mayn't he be countersigning?
mayn't we be countersigning?
mayn't you be countersigning?
mayn't they be countersigning? 	mayn't I have countersigned?
mayn't you have countersigned?
mayn't he have countersigned?
mayn't we have countersigned?
mayn't you have countersigned?
mayn't they have countersigned? 	mayn't I have been countersigning?
mayn't you have been countersigning?
mayn't he have been countersigning?
mayn't we have been countersigning?
mayn't you have been countersigning?
mayn't they have been countersigning?