may climb
Regular verb: climb - climbed- climbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may climb
you may climb
she may climb
we may climb
you may climb
they may climb 	I may be climbing
you may be climbing
she may be climbing
we may be climbing
you may be climbing
they may be climbing	I may have climbed
you may have climbed
she may have climbed
we may have climbed
you may have climbed
they may have climbed	I may have been climbing
you may have been climbing
she may have been climbing
we may have been climbing
you may have been climbing
they may have been climbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't climb
you mayn't climb
she mayn't climb
we mayn't climb
you mayn't climb
they mayn't climb 	I mayn't be climbing
you mayn't be climbing
she mayn't be climbing
we mayn't be climbing
you mayn't be climbing
they mayn't be climbing	I mayn't have climbed
you mayn't have climbed
she mayn't have climbed
we mayn't have climbed
you mayn't have climbed
they mayn't have climbed	I mayn't have been climbing
you mayn't have been climbing
she mayn't have been climbing
we mayn't have been climbing
you mayn't have been climbing
they mayn't have been climbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I climb?
may you climb?
may she climb?
may we climb?
may you climb?
may they climb? 	may I be climbing?
may you be climbing?
may she be climbing?
may we be climbing?
may you be climbing?
may they be climbing? 	may I have climbed?
may you have climbed?
may she have climbed?
may we have climbed?
may you have climbed?
may they have climbed? 	may I have been climbing?
may you have been climbing?
may she have been climbing?
may we have been climbing?
may you have been climbing?
may they have been climbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I climb?
mayn't you climb?
mayn't she climb?
mayn't we climb?
mayn't you climb?
mayn't they climb? 	mayn't I be climbing?
mayn't you be climbing?
mayn't she be climbing?
mayn't we be climbing?
mayn't you be climbing?
mayn't they be climbing? 	mayn't I have climbed?
mayn't you have climbed?
mayn't she have climbed?
mayn't we have climbed?
mayn't you have climbed?
mayn't they have climbed? 	mayn't I have been climbing?
mayn't you have been climbing?
mayn't she have been climbing?
mayn't we have been climbing?
mayn't you have been climbing?
mayn't they have been climbing?