may yowl
Regular verb: yowl - yowled- yowled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may yowl
you may yowl
he may yowl
we may yowl
you may yowl
they may yowl 	I may be yowling
you may be yowling
he may be yowling
we may be yowling
you may be yowling
they may be yowling	I may have yowled
you may have yowled
he may have yowled
we may have yowled
you may have yowled
they may have yowled	I may have been yowling
you may have been yowling
he may have been yowling
we may have been yowling
you may have been yowling
they may have been yowling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't yowl
you mayn't yowl
he mayn't yowl
we mayn't yowl
you mayn't yowl
they mayn't yowl 	I mayn't be yowling
you mayn't be yowling
he mayn't be yowling
we mayn't be yowling
you mayn't be yowling
they mayn't be yowling	I mayn't have yowled
you mayn't have yowled
he mayn't have yowled
we mayn't have yowled
you mayn't have yowled
they mayn't have yowled	I mayn't have been yowling
you mayn't have been yowling
he mayn't have been yowling
we mayn't have been yowling
you mayn't have been yowling
they mayn't have been yowling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I yowl?
may you yowl?
may he yowl?
may we yowl?
may you yowl?
may they yowl? 	may I be yowling?
may you be yowling?
may he be yowling?
may we be yowling?
may you be yowling?
may they be yowling? 	may I have yowled?
may you have yowled?
may he have yowled?
may we have yowled?
may you have yowled?
may they have yowled? 	may I have been yowling?
may you have been yowling?
may he have been yowling?
may we have been yowling?
may you have been yowling?
may they have been yowling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I yowl?
mayn't you yowl?
mayn't he yowl?
mayn't we yowl?
mayn't you yowl?
mayn't they yowl? 	mayn't I be yowling?
mayn't you be yowling?
mayn't he be yowling?
mayn't we be yowling?
mayn't you be yowling?
mayn't they be yowling? 	mayn't I have yowled?
mayn't you have yowled?
mayn't he have yowled?
mayn't we have yowled?
mayn't you have yowled?
mayn't they have yowled? 	mayn't I have been yowling?
mayn't you have been yowling?
mayn't he have been yowling?
mayn't we have been yowling?
mayn't you have been yowling?
mayn't they have been yowling?