may preinvestigate
Verbe régulier : preinvestigate - preinvestigated- preinvestigated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may preinvestigate
you may preinvestigate
she may preinvestigate
we may preinvestigate
you may preinvestigate
they may preinvestigate 	I may be preinvestigating
you may be preinvestigating
she may be preinvestigating
we may be preinvestigating
you may be preinvestigating
they may be preinvestigating	I may have preinvestigated
you may have preinvestigated
she may have preinvestigated
we may have preinvestigated
you may have preinvestigated
they may have preinvestigated	I may have been preinvestigating
you may have been preinvestigating
she may have been preinvestigating
we may have been preinvestigating
you may have been preinvestigating
they may have been preinvestigating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't preinvestigate
you mayn't preinvestigate
she mayn't preinvestigate
we mayn't preinvestigate
you mayn't preinvestigate
they mayn't preinvestigate 	I mayn't be preinvestigating
you mayn't be preinvestigating
she mayn't be preinvestigating
we mayn't be preinvestigating
you mayn't be preinvestigating
they mayn't be preinvestigating	I mayn't have preinvestigated
you mayn't have preinvestigated
she mayn't have preinvestigated
we mayn't have preinvestigated
you mayn't have preinvestigated
they mayn't have preinvestigated	I mayn't have been preinvestigating
you mayn't have been preinvestigating
she mayn't have been preinvestigating
we mayn't have been preinvestigating
you mayn't have been preinvestigating
they mayn't have been preinvestigating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I preinvestigate?
may you preinvestigate?
may she preinvestigate?
may we preinvestigate?
may you preinvestigate?
may they preinvestigate? 	may I be preinvestigating?
may you be preinvestigating?
may she be preinvestigating?
may we be preinvestigating?
may you be preinvestigating?
may they be preinvestigating? 	may I have preinvestigated?
may you have preinvestigated?
may she have preinvestigated?
may we have preinvestigated?
may you have preinvestigated?
may they have preinvestigated? 	may I have been preinvestigating?
may you have been preinvestigating?
may she have been preinvestigating?
may we have been preinvestigating?
may you have been preinvestigating?
may they have been preinvestigating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I preinvestigate?
mayn't you preinvestigate?
mayn't she preinvestigate?
mayn't we preinvestigate?
mayn't you preinvestigate?
mayn't they preinvestigate? 	mayn't I be preinvestigating?
mayn't you be preinvestigating?
mayn't she be preinvestigating?
mayn't we be preinvestigating?
mayn't you be preinvestigating?
mayn't they be preinvestigating? 	mayn't I have preinvestigated?
mayn't you have preinvestigated?
mayn't she have preinvestigated?
mayn't we have preinvestigated?
mayn't you have preinvestigated?
mayn't they have preinvestigated? 	mayn't I have been preinvestigating?
mayn't you have been preinvestigating?
mayn't she have been preinvestigating?
mayn't we have been preinvestigating?
mayn't you have been preinvestigating?
mayn't they have been preinvestigating?