may systematise
Regular verb: systematise - systematised- systematised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may systematise
you may systematise
she may systematise
we may systematise
you may systematise
they may systematise 	I may be systematising
you may be systematising
she may be systematising
we may be systematising
you may be systematising
they may be systematising	I may have systematised
you may have systematised
she 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
she 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
she 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
she 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
she 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
she 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 she systematise?
may we systematise?
may you systematise?
may they systematise? 	may I be systematising?
may you be systematising?
may she be systematising?
may we be systematising?
may you be systematising?
may they be systematising? 	may I have systematised?
may you have systematised?
may she 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 she 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 she 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 she 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 she 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 she have been systematising?
mayn't we have been systematising?
mayn't you have been systematising?
mayn't they have been systematising?