may clamber
Regular verb: clamber - clambered- clambered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may clamber
you may clamber
he may clamber
we may clamber
you may clamber
they may clamber 	I may be clambering
you may be clambering
he may be clambering
we may be clambering
you may be clambering
they may be clambering	I may have clambered
you may have clambered
he may have clambered
we may have clambered
you may have clambered
they may have clambered	I may have been clambering
you may have been clambering
he may have been clambering
we may have been clambering
you may have been clambering
they may have been clambering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't clamber
you mayn't clamber
he mayn't clamber
we mayn't clamber
you mayn't clamber
they mayn't clamber 	I mayn't be clambering
you mayn't be clambering
he mayn't be clambering
we mayn't be clambering
you mayn't be clambering
they mayn't be clambering	I mayn't have clambered
you mayn't have clambered
he mayn't have clambered
we mayn't have clambered
you mayn't have clambered
they mayn't have clambered	I mayn't have been clambering
you mayn't have been clambering
he mayn't have been clambering
we mayn't have been clambering
you mayn't have been clambering
they mayn't have been clambering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I clamber?
may you clamber?
may he clamber?
may we clamber?
may you clamber?
may they clamber? 	may I be clambering?
may you be clambering?
may he be clambering?
may we be clambering?
may you be clambering?
may they be clambering? 	may I have clambered?
may you have clambered?
may he have clambered?
may we have clambered?
may you have clambered?
may they have clambered? 	may I have been clambering?
may you have been clambering?
may he have been clambering?
may we have been clambering?
may you have been clambering?
may they have been clambering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I clamber?
mayn't you clamber?
mayn't he clamber?
mayn't we clamber?
mayn't you clamber?
mayn't they clamber? 	mayn't I be clambering?
mayn't you be clambering?
mayn't he be clambering?
mayn't we be clambering?
mayn't you be clambering?
mayn't they be clambering? 	mayn't I have clambered?
mayn't you have clambered?
mayn't he have clambered?
mayn't we have clambered?
mayn't you have clambered?
mayn't they have clambered? 	mayn't I have been clambering?
mayn't you have been clambering?
mayn't he have been clambering?
mayn't we have been clambering?
mayn't you have been clambering?
mayn't they have been clambering?