may synchronise
Regular verb: synchronise - synchronised- synchronised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may synchronise
you may synchronise
he may synchronise
we may synchronise
you may synchronise
they may synchronise 	I may be synchronising
you may be synchronising
he may be synchronising
we may be synchronising
you may be synchronising
they may be synchronising	I may have synchronised
you may have synchronised
he may have synchronised
we may have synchronised
you may have synchronised
they may have synchronised	I may have been synchronising
you may have been synchronising
he may have been synchronising
we may have been synchronising
you may have been synchronising
they may have been synchronising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't synchronise
you mayn't synchronise
he mayn't synchronise
we mayn't synchronise
you mayn't synchronise
they mayn't synchronise 	I mayn't be synchronising
you mayn't be synchronising
he mayn't be synchronising
we mayn't be synchronising
you mayn't be synchronising
they mayn't be synchronising	I mayn't have synchronised
you mayn't have synchronised
he mayn't have synchronised
we mayn't have synchronised
you mayn't have synchronised
they mayn't have synchronised	I mayn't have been synchronising
you mayn't have been synchronising
he mayn't have been synchronising
we mayn't have been synchronising
you mayn't have been synchronising
they mayn't have been synchronising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I synchronise?
may you synchronise?
may he synchronise?
may we synchronise?
may you synchronise?
may they synchronise? 	may I be synchronising?
may you be synchronising?
may he be synchronising?
may we be synchronising?
may you be synchronising?
may they be synchronising? 	may I have synchronised?
may you have synchronised?
may he have synchronised?
may we have synchronised?
may you have synchronised?
may they have synchronised? 	may I have been synchronising?
may you have been synchronising?
may he have been synchronising?
may we have been synchronising?
may you have been synchronising?
may they have been synchronising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I synchronise?
mayn't you synchronise?
mayn't he synchronise?
mayn't we synchronise?
mayn't you synchronise?
mayn't they synchronise? 	mayn't I be synchronising?
mayn't you be synchronising?
mayn't he be synchronising?
mayn't we be synchronising?
mayn't you be synchronising?
mayn't they be synchronising? 	mayn't I have synchronised?
mayn't you have synchronised?
mayn't he have synchronised?
mayn't we have synchronised?
mayn't you have synchronised?
mayn't they have synchronised? 	mayn't I have been synchronising?
mayn't you have been synchronising?
mayn't he have been synchronising?
mayn't we have been synchronising?
mayn't you have been synchronising?
mayn't they have been synchronising?