may cachinnate
Regular verb: cachinnate - cachinnated- cachinnated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may cachinnate
you may cachinnate
she may cachinnate
we may cachinnate
you may cachinnate
they may cachinnate 	I may be cachinnating
you may be cachinnating
she may be cachinnating
we may be cachinnating
you may be cachinnating
they may be cachinnating	I may have cachinnated
you may have cachinnated
she may have cachinnated
we may have cachinnated
you may have cachinnated
they may have cachinnated	I may have been cachinnating
you may have been cachinnating
she may have been cachinnating
we may have been cachinnating
you may have been cachinnating
they may have been cachinnating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't cachinnate
you mayn't cachinnate
she mayn't cachinnate
we mayn't cachinnate
you mayn't cachinnate
they mayn't cachinnate 	I mayn't be cachinnating
you mayn't be cachinnating
she mayn't be cachinnating
we mayn't be cachinnating
you mayn't be cachinnating
they mayn't be cachinnating	I mayn't have cachinnated
you mayn't have cachinnated
she mayn't have cachinnated
we mayn't have cachinnated
you mayn't have cachinnated
they mayn't have cachinnated	I mayn't have been cachinnating
you mayn't have been cachinnating
she mayn't have been cachinnating
we mayn't have been cachinnating
you mayn't have been cachinnating
they mayn't have been cachinnating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I cachinnate?
may you cachinnate?
may she cachinnate?
may we cachinnate?
may you cachinnate?
may they cachinnate? 	may I be cachinnating?
may you be cachinnating?
may she be cachinnating?
may we be cachinnating?
may you be cachinnating?
may they be cachinnating? 	may I have cachinnated?
may you have cachinnated?
may she have cachinnated?
may we have cachinnated?
may you have cachinnated?
may they have cachinnated? 	may I have been cachinnating?
may you have been cachinnating?
may she have been cachinnating?
may we have been cachinnating?
may you have been cachinnating?
may they have been cachinnating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I cachinnate?
mayn't you cachinnate?
mayn't she cachinnate?
mayn't we cachinnate?
mayn't you cachinnate?
mayn't they cachinnate? 	mayn't I be cachinnating?
mayn't you be cachinnating?
mayn't she be cachinnating?
mayn't we be cachinnating?
mayn't you be cachinnating?
mayn't they be cachinnating? 	mayn't I have cachinnated?
mayn't you have cachinnated?
mayn't she have cachinnated?
mayn't we have cachinnated?
mayn't you have cachinnated?
mayn't they have cachinnated? 	mayn't I have been cachinnating?
mayn't you have been cachinnating?
mayn't she have been cachinnating?
mayn't we have been cachinnating?
mayn't you have been cachinnating?
mayn't they have been cachinnating?