may sinter
Regular verb: sinter - sintered- sintered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may sinter
you may sinter
she may sinter
we may sinter
you may sinter
they may sinter 	I may be sintering
you may be sintering
she may be sintering
we may be sintering
you may be sintering
they may be sintering	I may have sintered
you may have sintered
she may have sintered
we may have sintered
you may have sintered
they may have sintered	I may have been sintering
you may have been sintering
she may have been sintering
we may have been sintering
you may have been sintering
they may have been sintering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't sinter
you mayn't sinter
she mayn't sinter
we mayn't sinter
you mayn't sinter
they mayn't sinter 	I mayn't be sintering
you mayn't be sintering
she mayn't be sintering
we mayn't be sintering
you mayn't be sintering
they mayn't be sintering	I mayn't have sintered
you mayn't have sintered
she mayn't have sintered
we mayn't have sintered
you mayn't have sintered
they mayn't have sintered	I mayn't have been sintering
you mayn't have been sintering
she mayn't have been sintering
we mayn't have been sintering
you mayn't have been sintering
they mayn't have been sintering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I sinter?
may you sinter?
may she sinter?
may we sinter?
may you sinter?
may they sinter? 	may I be sintering?
may you be sintering?
may she be sintering?
may we be sintering?
may you be sintering?
may they be sintering? 	may I have sintered?
may you have sintered?
may she have sintered?
may we have sintered?
may you have sintered?
may they have sintered? 	may I have been sintering?
may you have been sintering?
may she have been sintering?
may we have been sintering?
may you have been sintering?
may they have been sintering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I sinter?
mayn't you sinter?
mayn't she sinter?
mayn't we sinter?
mayn't you sinter?
mayn't they sinter? 	mayn't I be sintering?
mayn't you be sintering?
mayn't she be sintering?
mayn't we be sintering?
mayn't you be sintering?
mayn't they be sintering? 	mayn't I have sintered?
mayn't you have sintered?
mayn't she have sintered?
mayn't we have sintered?
mayn't you have sintered?
mayn't they have sintered? 	mayn't I have been sintering?
mayn't you have been sintering?
mayn't she have been sintering?
mayn't we have been sintering?
mayn't you have been sintering?
mayn't they have been sintering?