may estimate
Regular verb: estimate - estimated- estimated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may estimate
you may estimate
she may estimate
we may estimate
you may estimate
they may estimate 	I may be estimating
you may be estimating
she may be estimating
we may be estimating
you may be estimating
they may be estimating	I may have estimated
you may have estimated
she may have estimated
we may have estimated
you may have estimated
they may have estimated	I may have been estimating
you may have been estimating
she may have been estimating
we may have been estimating
you may have been estimating
they may have been estimating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't estimate
you mayn't estimate
she mayn't estimate
we mayn't estimate
you mayn't estimate
they mayn't estimate 	I mayn't be estimating
you mayn't be estimating
she mayn't be estimating
we mayn't be estimating
you mayn't be estimating
they mayn't be estimating	I mayn't have estimated
you mayn't have estimated
she mayn't have estimated
we mayn't have estimated
you mayn't have estimated
they mayn't have estimated	I mayn't have been estimating
you mayn't have been estimating
she mayn't have been estimating
we mayn't have been estimating
you mayn't have been estimating
they mayn't have been estimating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I estimate?
may you estimate?
may she estimate?
may we estimate?
may you estimate?
may they estimate? 	may I be estimating?
may you be estimating?
may she be estimating?
may we be estimating?
may you be estimating?
may they be estimating? 	may I have estimated?
may you have estimated?
may she have estimated?
may we have estimated?
may you have estimated?
may they have estimated? 	may I have been estimating?
may you have been estimating?
may she have been estimating?
may we have been estimating?
may you have been estimating?
may they have been estimating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I estimate?
mayn't you estimate?
mayn't she estimate?
mayn't we estimate?
mayn't you estimate?
mayn't they estimate? 	mayn't I be estimating?
mayn't you be estimating?
mayn't she be estimating?
mayn't we be estimating?
mayn't you be estimating?
mayn't they be estimating? 	mayn't I have estimated?
mayn't you have estimated?
mayn't she have estimated?
mayn't we have estimated?
mayn't you have estimated?
mayn't they have estimated? 	mayn't I have been estimating?
mayn't you have been estimating?
mayn't she have been estimating?
mayn't we have been estimating?
mayn't you have been estimating?
mayn't they have been estimating?