may pole-vault
Regular verb: pole-vault - pole-vaulted- pole-vaulted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may pole-vault
you may pole-vault
he may pole-vault
we may pole-vault
you may pole-vault
they may pole-vault 	I may be pole-vaulting
you may be pole-vaulting
he may be pole-vaulting
we may be pole-vaulting
you may be pole-vaulting
they may be pole-vaulting	I may have pole-vaulted
you may have pole-vaulted
he may have pole-vaulted
we may have pole-vaulted
you may have pole-vaulted
they may have pole-vaulted	I may have been pole-vaulting
you may have been pole-vaulting
he may have been pole-vaulting
we may have been pole-vaulting
you may have been pole-vaulting
they may have been pole-vaulting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't pole-vault
you mayn't pole-vault
he mayn't pole-vault
we mayn't pole-vault
you mayn't pole-vault
they mayn't pole-vault 	I mayn't be pole-vaulting
you mayn't be pole-vaulting
he mayn't be pole-vaulting
we mayn't be pole-vaulting
you mayn't be pole-vaulting
they mayn't be pole-vaulting	I mayn't have pole-vaulted
you mayn't have pole-vaulted
he mayn't have pole-vaulted
we mayn't have pole-vaulted
you mayn't have pole-vaulted
they mayn't have pole-vaulted	I mayn't have been pole-vaulting
you mayn't have been pole-vaulting
he mayn't have been pole-vaulting
we mayn't have been pole-vaulting
you mayn't have been pole-vaulting
they mayn't have been pole-vaulting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I pole-vault?
may you pole-vault?
may he pole-vault?
may we pole-vault?
may you pole-vault?
may they pole-vault? 	may I be pole-vaulting?
may you be pole-vaulting?
may he be pole-vaulting?
may we be pole-vaulting?
may you be pole-vaulting?
may they be pole-vaulting? 	may I have pole-vaulted?
may you have pole-vaulted?
may he have pole-vaulted?
may we have pole-vaulted?
may you have pole-vaulted?
may they have pole-vaulted? 	may I have been pole-vaulting?
may you have been pole-vaulting?
may he have been pole-vaulting?
may we have been pole-vaulting?
may you have been pole-vaulting?
may they have been pole-vaulting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I pole-vault?
mayn't you pole-vault?
mayn't he pole-vault?
mayn't we pole-vault?
mayn't you pole-vault?
mayn't they pole-vault? 	mayn't I be pole-vaulting?
mayn't you be pole-vaulting?
mayn't he be pole-vaulting?
mayn't we be pole-vaulting?
mayn't you be pole-vaulting?
mayn't they be pole-vaulting? 	mayn't I have pole-vaulted?
mayn't you have pole-vaulted?
mayn't he have pole-vaulted?
mayn't we have pole-vaulted?
mayn't you have pole-vaulted?
mayn't they have pole-vaulted? 	mayn't I have been pole-vaulting?
mayn't you have been pole-vaulting?
mayn't he have been pole-vaulting?
mayn't we have been pole-vaulting?
mayn't you have been pole-vaulting?
mayn't they have been pole-vaulting?