may swallow
Regular verb: swallow - swallowed- swallowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may swallow
you may swallow
she may swallow
we may swallow
you may swallow
they may swallow 	I may be swallowing
you may be swallowing
she may be swallowing
we may be swallowing
you may be swallowing
they may be swallowing	I may have swallowed
you may have swallowed
she may have swallowed
we may have swallowed
you may have swallowed
they may have swallowed	I may have been swallowing
you may have been swallowing
she may have been swallowing
we may have been swallowing
you may have been swallowing
they may have been swallowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't swallow
you mayn't swallow
she mayn't swallow
we mayn't swallow
you mayn't swallow
they mayn't swallow 	I mayn't be swallowing
you mayn't be swallowing
she mayn't be swallowing
we mayn't be swallowing
you mayn't be swallowing
they mayn't be swallowing	I mayn't have swallowed
you mayn't have swallowed
she mayn't have swallowed
we mayn't have swallowed
you mayn't have swallowed
they mayn't have swallowed	I mayn't have been swallowing
you mayn't have been swallowing
she mayn't have been swallowing
we mayn't have been swallowing
you mayn't have been swallowing
they mayn't have been swallowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I swallow?
may you swallow?
may she swallow?
may we swallow?
may you swallow?
may they swallow? 	may I be swallowing?
may you be swallowing?
may she be swallowing?
may we be swallowing?
may you be swallowing?
may they be swallowing? 	may I have swallowed?
may you have swallowed?
may she have swallowed?
may we have swallowed?
may you have swallowed?
may they have swallowed? 	may I have been swallowing?
may you have been swallowing?
may she have been swallowing?
may we have been swallowing?
may you have been swallowing?
may they have been swallowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I swallow?
mayn't you swallow?
mayn't she swallow?
mayn't we swallow?
mayn't you swallow?
mayn't they swallow? 	mayn't I be swallowing?
mayn't you be swallowing?
mayn't she be swallowing?
mayn't we be swallowing?
mayn't you be swallowing?
mayn't they be swallowing? 	mayn't I have swallowed?
mayn't you have swallowed?
mayn't she have swallowed?
mayn't we have swallowed?
mayn't you have swallowed?
mayn't they have swallowed? 	mayn't I have been swallowing?
mayn't you have been swallowing?
mayn't she have been swallowing?
mayn't we have been swallowing?
mayn't you have been swallowing?
mayn't they have been swallowing?