may water-ski
Regular verb: water-ski - water-skied- water-skied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may water-ski
you may water-ski
she may water-ski
we may water-ski
you may water-ski
they may water-ski 	I may be water-skiing
you may be water-skiing
she may be water-skiing
we may be water-skiing
you may be water-skiing
they may be water-skiing	I may have water-skied
you may have water-skied
she may have water-skied
we may have water-skied
you may have water-skied
they may have water-skied	I may have been water-skiing
you may have been water-skiing
she may have been water-skiing
we may have been water-skiing
you may have been water-skiing
they may have been water-skiing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not water-ski
you may not water-ski
she may not water-ski
we may not water-ski
you may not water-ski
they may not water-ski 	I may not be water-skiing
you may not be water-skiing
she may not be water-skiing
we may not be water-skiing
you may not be water-skiing
they may not be water-skiing	I may not have water-skied
you may not have water-skied
she may not have water-skied
we may not have water-skied
you may not have water-skied
they may not have water-skied	I may not have been water-skiing
you may not have been water-skiing
she may not have been water-skiing
we may not have been water-skiing
you may not have been water-skiing
they may not have been water-skiing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I water-ski?
may you water-ski?
may she water-ski?
may we water-ski?
may you water-ski?
may they water-ski? 	may I be water-skiing?
may you be water-skiing?
may she be water-skiing?
may we be water-skiing?
may you be water-skiing?
may they be water-skiing? 	may I have water-skied?
may you have water-skied?
may she have water-skied?
may we have water-skied?
may you have water-skied?
may they have water-skied? 	may I have been water-skiing?
may you have been water-skiing?
may she have been water-skiing?
may we have been water-skiing?
may you have been water-skiing?
may they have been water-skiing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not water-ski?
may you not water-ski?
may she not water-ski?
may we not water-ski?
may you not water-ski?
may they not water-ski? 	may I not be water-skiing?
may you not be water-skiing?
may she not be water-skiing?
may we not be water-skiing?
may you not be water-skiing?
may they not be water-skiing? 	may I not have water-skied?
may you not have water-skied?
may she not have water-skied?
may we not have water-skied?
may you not have water-skied?
may they not have water-skied? 	may I not have been water-skiing?
may you not have been water-skiing?
may she not have been water-skiing?
may we not have been water-skiing?
may you not have been water-skiing?
may they not have been water-skiing?