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 may not swallow
you may not swallow
she may not swallow
we may not swallow
you may not swallow
they may not swallow 	I may not be swallowing
you may not be swallowing
she may not be swallowing
we may not be swallowing
you may not be swallowing
they may not be swallowing	I may not have swallowed
you may not have swallowed
she may not have swallowed
we may not have swallowed
you may not have swallowed
they may not have swallowed	I may not have been swallowing
you may not have been swallowing
she may not have been swallowing
we may not have been swallowing
you may not have been swallowing
they may not 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 	
may I not swallow?
may you not swallow?
may she not swallow?
may we not swallow?
may you not swallow?
may they not swallow? 	may I not be swallowing?
may you not be swallowing?
may she not be swallowing?
may we not be swallowing?
may you not be swallowing?
may they not be swallowing? 	may I not have swallowed?
may you not have swallowed?
may she not have swallowed?
may we not have swallowed?
may you not have swallowed?
may they not have swallowed? 	may I not have been swallowing?
may you not have been swallowing?
may she not have been swallowing?
may we not have been swallowing?
may you not have been swallowing?
may they not have been swallowing?