may systematise
Regular verb: systematise - systematised- systematised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may systematise
you may systematise
he may systematise
we may systematise
you may systematise
they may systematise 	I may be systematising
you may be systematising
he may be systematising
we may be systematising
you may be systematising
they may be systematising	I may have systematised
you may have systematised
he may have systematised
we may have systematised
you may have systematised
they may have systematised	I may have been systematising
you may have been systematising
he may have been systematising
we may have been systematising
you may have been systematising
they may have been systematising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't systematise
you mayn't systematise
he mayn't systematise
we mayn't systematise
you mayn't systematise
they mayn't systematise 	I mayn't be systematising
you mayn't be systematising
he mayn't be systematising
we mayn't be systematising
you mayn't be systematising
they mayn't be systematising	I mayn't have systematised
you mayn't have systematised
he mayn't have systematised
we mayn't have systematised
you mayn't have systematised
they mayn't have systematised	I mayn't have been systematising
you mayn't have been systematising
he mayn't have been systematising
we mayn't have been systematising
you mayn't have been systematising
they mayn't have been systematising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I systematise?
may you systematise?
may he systematise?
may we systematise?
may you systematise?
may they systematise? 	may I be systematising?
may you be systematising?
may he be systematising?
may we be systematising?
may you be systematising?
may they be systematising? 	may I have systematised?
may you have systematised?
may he have systematised?
may we have systematised?
may you have systematised?
may they have systematised? 	may I have been systematising?
may you have been systematising?
may he have been systematising?
may we have been systematising?
may you have been systematising?
may they have been systematising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I systematise?
mayn't you systematise?
mayn't he systematise?
mayn't we systematise?
mayn't you systematise?
mayn't they systematise? 	mayn't I be systematising?
mayn't you be systematising?
mayn't he be systematising?
mayn't we be systematising?
mayn't you be systematising?
mayn't they be systematising? 	mayn't I have systematised?
mayn't you have systematised?
mayn't he have systematised?
mayn't we have systematised?
mayn't you have systematised?
mayn't they have systematised? 	mayn't I have been systematising?
mayn't you have been systematising?
mayn't he have been systematising?
mayn't we have been systematising?
mayn't you have been systematising?
mayn't they have been systematising?