may cave
Regular verb: cave - caved- caved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may cave
you may cave
he may cave
we may cave
you may cave
they may cave 	I may be caving
you may be caving
he may be caving
we may be caving
you may be caving
they may be caving	I may have caved
you may have caved
he may have caved
we may have caved
you may have caved
they may have caved	I may have been caving
you may have been caving
he may have been caving
we may have been caving
you may have been caving
they may have been caving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't cave
you mayn't cave
he mayn't cave
we mayn't cave
you mayn't cave
they mayn't cave 	I mayn't be caving
you mayn't be caving
he mayn't be caving
we mayn't be caving
you mayn't be caving
they mayn't be caving	I mayn't have caved
you mayn't have caved
he mayn't have caved
we mayn't have caved
you mayn't have caved
they mayn't have caved	I mayn't have been caving
you mayn't have been caving
he mayn't have been caving
we mayn't have been caving
you mayn't have been caving
they mayn't have been caving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I cave?
may you cave?
may he cave?
may we cave?
may you cave?
may they cave? 	may I be caving?
may you be caving?
may he be caving?
may we be caving?
may you be caving?
may they be caving? 	may I have caved?
may you have caved?
may he have caved?
may we have caved?
may you have caved?
may they have caved? 	may I have been caving?
may you have been caving?
may he have been caving?
may we have been caving?
may you have been caving?
may they have been caving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I cave?
mayn't you cave?
mayn't he cave?
mayn't we cave?
mayn't you cave?
mayn't they cave? 	mayn't I be caving?
mayn't you be caving?
mayn't he be caving?
mayn't we be caving?
mayn't you be caving?
mayn't they be caving? 	mayn't I have caved?
mayn't you have caved?
mayn't he have caved?
mayn't we have caved?
mayn't you have caved?
mayn't they have caved? 	mayn't I have been caving?
mayn't you have been caving?
mayn't he have been caving?
mayn't we have been caving?
mayn't you have been caving?
mayn't they have been caving?