may swop
Regular verb: swop - swopped- swopped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may swop
you may swop
she may swop
we may swop
you may swop
they may swop 	I may be swopping
you may be swopping
she may be swopping
we may be swopping
you may be swopping
they may be swopping	I may have swopped
you may have swopped
she may have swopped
we may have swopped
you may have swopped
they may have swopped	I may have been swopping
you may have been swopping
she may have been swopping
we may have been swopping
you may have been swopping
they may have been swopping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't swop
you mayn't swop
she mayn't swop
we mayn't swop
you mayn't swop
they mayn't swop 	I mayn't be swopping
you mayn't be swopping
she mayn't be swopping
we mayn't be swopping
you mayn't be swopping
they mayn't be swopping	I mayn't have swopped
you mayn't have swopped
she mayn't have swopped
we mayn't have swopped
you mayn't have swopped
they mayn't have swopped	I mayn't have been swopping
you mayn't have been swopping
she mayn't have been swopping
we mayn't have been swopping
you mayn't have been swopping
they mayn't have been swopping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I swop?
may you swop?
may she swop?
may we swop?
may you swop?
may they swop? 	may I be swopping?
may you be swopping?
may she be swopping?
may we be swopping?
may you be swopping?
may they be swopping? 	may I have swopped?
may you have swopped?
may she have swopped?
may we have swopped?
may you have swopped?
may they have swopped? 	may I have been swopping?
may you have been swopping?
may she have been swopping?
may we have been swopping?
may you have been swopping?
may they have been swopping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I swop?
mayn't you swop?
mayn't she swop?
mayn't we swop?
mayn't you swop?
mayn't they swop? 	mayn't I be swopping?
mayn't you be swopping?
mayn't she be swopping?
mayn't we be swopping?
mayn't you be swopping?
mayn't they be swopping? 	mayn't I have swopped?
mayn't you have swopped?
mayn't she have swopped?
mayn't we have swopped?
mayn't you have swopped?
mayn't they have swopped? 	mayn't I have been swopping?
mayn't you have been swopping?
mayn't she have been swopping?
mayn't we have been swopping?
mayn't you have been swopping?
mayn't they have been swopping?