may yak
Regular verb: yak - yaked- yaked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may yak
you may yak
she may yak
we may yak
you may yak
they may yak 	I may be yaking
you may be yaking
she may be yaking
we may be yaking
you may be yaking
they may be yaking	I may have yaked
you may have yaked
she may have yaked
we may have yaked
you may have yaked
they may have yaked	I may have been yaking
you may have been yaking
she may have been yaking
we may have been yaking
you may have been yaking
they may have been yaking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't yak
you mayn't yak
she mayn't yak
we mayn't yak
you mayn't yak
they mayn't yak 	I mayn't be yaking
you mayn't be yaking
she mayn't be yaking
we mayn't be yaking
you mayn't be yaking
they mayn't be yaking	I mayn't have yaked
you mayn't have yaked
she mayn't have yaked
we mayn't have yaked
you mayn't have yaked
they mayn't have yaked	I mayn't have been yaking
you mayn't have been yaking
she mayn't have been yaking
we mayn't have been yaking
you mayn't have been yaking
they mayn't have been yaking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I yak?
may you yak?
may she yak?
may we yak?
may you yak?
may they yak? 	may I be yaking?
may you be yaking?
may she be yaking?
may we be yaking?
may you be yaking?
may they be yaking? 	may I have yaked?
may you have yaked?
may she have yaked?
may we have yaked?
may you have yaked?
may they have yaked? 	may I have been yaking?
may you have been yaking?
may she have been yaking?
may we have been yaking?
may you have been yaking?
may they have been yaking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I yak?
mayn't you yak?
mayn't she yak?
mayn't we yak?
mayn't you yak?
mayn't they yak? 	mayn't I be yaking?
mayn't you be yaking?
mayn't she be yaking?
mayn't we be yaking?
mayn't you be yaking?
mayn't they be yaking? 	mayn't I have yaked?
mayn't you have yaked?
mayn't she have yaked?
mayn't we have yaked?
mayn't you have yaked?
mayn't they have yaked? 	mayn't I have been yaking?
mayn't you have been yaking?
mayn't she have been yaking?
mayn't we have been yaking?
mayn't you have been yaking?
mayn't they have been yaking?