may jab
Regular verb: jab - jabbed- jabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may jab
you may jab
he may jab
we may jab
you may jab
they may jab 	I may be jabbing
you may be jabbing
he may be jabbing
we may be jabbing
you may be jabbing
they may be jabbing	I may have jabbed
you may have jabbed
he may have jabbed
we may have jabbed
you may have jabbed
they may have jabbed	I may have been jabbing
you may have been jabbing
he may have been jabbing
we may have been jabbing
you may have been jabbing
they may have been jabbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't jab
you mayn't jab
he mayn't jab
we mayn't jab
you mayn't jab
they mayn't jab 	I mayn't be jabbing
you mayn't be jabbing
he mayn't be jabbing
we mayn't be jabbing
you mayn't be jabbing
they mayn't be jabbing	I mayn't have jabbed
you mayn't have jabbed
he mayn't have jabbed
we mayn't have jabbed
you mayn't have jabbed
they mayn't have jabbed	I mayn't have been jabbing
you mayn't have been jabbing
he mayn't have been jabbing
we mayn't have been jabbing
you mayn't have been jabbing
they mayn't have been jabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I jab?
may you jab?
may he jab?
may we jab?
may you jab?
may they jab? 	may I be jabbing?
may you be jabbing?
may he be jabbing?
may we be jabbing?
may you be jabbing?
may they be jabbing? 	may I have jabbed?
may you have jabbed?
may he have jabbed?
may we have jabbed?
may you have jabbed?
may they have jabbed? 	may I have been jabbing?
may you have been jabbing?
may he have been jabbing?
may we have been jabbing?
may you have been jabbing?
may they have been jabbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I jab?
mayn't you jab?
mayn't he jab?
mayn't we jab?
mayn't you jab?
mayn't they jab? 	mayn't I be jabbing?
mayn't you be jabbing?
mayn't he be jabbing?
mayn't we be jabbing?
mayn't you be jabbing?
mayn't they be jabbing? 	mayn't I have jabbed?
mayn't you have jabbed?
mayn't he have jabbed?
mayn't we have jabbed?
mayn't you have jabbed?
mayn't they have jabbed? 	mayn't I have been jabbing?
mayn't you have been jabbing?
mayn't he have been jabbing?
mayn't we have been jabbing?
mayn't you have been jabbing?
mayn't they have been jabbing?