may guffaw
Regular verb: guffaw - guffawed- guffawed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may guffaw
you may guffaw
he may guffaw
we may guffaw
you may guffaw
they may guffaw 	I may be guffawing
you may be guffawing
he may be guffawing
we may be guffawing
you may be guffawing
they may be guffawing	I may have guffawed
you may have guffawed
he may have guffawed
we may have guffawed
you may have guffawed
they may have guffawed	I may have been guffawing
you may have been guffawing
he may have been guffawing
we may have been guffawing
you may have been guffawing
they may have been guffawing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't guffaw
you mayn't guffaw
he mayn't guffaw
we mayn't guffaw
you mayn't guffaw
they mayn't guffaw 	I mayn't be guffawing
you mayn't be guffawing
he mayn't be guffawing
we mayn't be guffawing
you mayn't be guffawing
they mayn't be guffawing	I mayn't have guffawed
you mayn't have guffawed
he mayn't have guffawed
we mayn't have guffawed
you mayn't have guffawed
they mayn't have guffawed	I mayn't have been guffawing
you mayn't have been guffawing
he mayn't have been guffawing
we mayn't have been guffawing
you mayn't have been guffawing
they mayn't have been guffawing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I guffaw?
may you guffaw?
may he guffaw?
may we guffaw?
may you guffaw?
may they guffaw? 	may I be guffawing?
may you be guffawing?
may he be guffawing?
may we be guffawing?
may you be guffawing?
may they be guffawing? 	may I have guffawed?
may you have guffawed?
may he have guffawed?
may we have guffawed?
may you have guffawed?
may they have guffawed? 	may I have been guffawing?
may you have been guffawing?
may he have been guffawing?
may we have been guffawing?
may you have been guffawing?
may they have been guffawing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I guffaw?
mayn't you guffaw?
mayn't he guffaw?
mayn't we guffaw?
mayn't you guffaw?
mayn't they guffaw? 	mayn't I be guffawing?
mayn't you be guffawing?
mayn't he be guffawing?
mayn't we be guffawing?
mayn't you be guffawing?
mayn't they be guffawing? 	mayn't I have guffawed?
mayn't you have guffawed?
mayn't he have guffawed?
mayn't we have guffawed?
mayn't you have guffawed?
mayn't they have guffawed? 	mayn't I have been guffawing?
mayn't you have been guffawing?
mayn't he have been guffawing?
mayn't we have been guffawing?
mayn't you have been guffawing?
mayn't they have been guffawing?