may extemporise
Regular verb: extemporise - extemporised- extemporised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may extemporise
you may extemporise
he may extemporise
we may extemporise
you may extemporise
they may extemporise 	I may be extemporising
you may be extemporising
he may be extemporising
we may be extemporising
you may be extemporising
they may be extemporising	I may have extemporised
you may have extemporised
he may have extemporised
we may have extemporised
you may have extemporised
they may have extemporised	I may have been extemporising
you may have been extemporising
he may have been extemporising
we may have been extemporising
you may have been extemporising
they may have been extemporising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't extemporise
you mayn't extemporise
he mayn't extemporise
we mayn't extemporise
you mayn't extemporise
they mayn't extemporise 	I mayn't be extemporising
you mayn't be extemporising
he mayn't be extemporising
we mayn't be extemporising
you mayn't be extemporising
they mayn't be extemporising	I mayn't have extemporised
you mayn't have extemporised
he mayn't have extemporised
we mayn't have extemporised
you mayn't have extemporised
they mayn't have extemporised	I mayn't have been extemporising
you mayn't have been extemporising
he mayn't have been extemporising
we mayn't have been extemporising
you mayn't have been extemporising
they mayn't have been extemporising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I extemporise?
may you extemporise?
may he extemporise?
may we extemporise?
may you extemporise?
may they extemporise? 	may I be extemporising?
may you be extemporising?
may he be extemporising?
may we be extemporising?
may you be extemporising?
may they be extemporising? 	may I have extemporised?
may you have extemporised?
may he have extemporised?
may we have extemporised?
may you have extemporised?
may they have extemporised? 	may I have been extemporising?
may you have been extemporising?
may he have been extemporising?
may we have been extemporising?
may you have been extemporising?
may they have been extemporising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I extemporise?
mayn't you extemporise?
mayn't he extemporise?
mayn't we extemporise?
mayn't you extemporise?
mayn't they extemporise? 	mayn't I be extemporising?
mayn't you be extemporising?
mayn't he be extemporising?
mayn't we be extemporising?
mayn't you be extemporising?
mayn't they be extemporising? 	mayn't I have extemporised?
mayn't you have extemporised?
mayn't he have extemporised?
mayn't we have extemporised?
mayn't you have extemporised?
mayn't they have extemporised? 	mayn't I have been extemporising?
mayn't you have been extemporising?
mayn't he have been extemporising?
mayn't we have been extemporising?
mayn't you have been extemporising?
mayn't they have been extemporising?