may tinker
Regular verb: tinker - tinkered- tinkered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may tinker
you may tinker
he may tinker
we may tinker
you may tinker
they may tinker 	I may be tinkering
you may be tinkering
he may be tinkering
we may be tinkering
you may be tinkering
they may be tinkering	I may have tinkered
you may have tinkered
he may have tinkered
we may have tinkered
you may have tinkered
they may have tinkered	I may have been tinkering
you may have been tinkering
he may have been tinkering
we may have been tinkering
you may have been tinkering
they may have been tinkering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not tinker
you may not tinker
he may not tinker
we may not tinker
you may not tinker
they may not tinker 	I may not be tinkering
you may not be tinkering
he may not be tinkering
we may not be tinkering
you may not be tinkering
they may not be tinkering	I may not have tinkered
you may not have tinkered
he may not have tinkered
we may not have tinkered
you may not have tinkered
they may not have tinkered	I may not have been tinkering
you may not have been tinkering
he may not have been tinkering
we may not have been tinkering
you may not have been tinkering
they may not have been tinkering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I tinker?
may you tinker?
may he tinker?
may we tinker?
may you tinker?
may they tinker? 	may I be tinkering?
may you be tinkering?
may he be tinkering?
may we be tinkering?
may you be tinkering?
may they be tinkering? 	may I have tinkered?
may you have tinkered?
may he have tinkered?
may we have tinkered?
may you have tinkered?
may they have tinkered? 	may I have been tinkering?
may you have been tinkering?
may he have been tinkering?
may we have been tinkering?
may you have been tinkering?
may they have been tinkering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not tinker?
may you not tinker?
may he not tinker?
may we not tinker?
may you not tinker?
may they not tinker? 	may I not be tinkering?
may you not be tinkering?
may he not be tinkering?
may we not be tinkering?
may you not be tinkering?
may they not be tinkering? 	may I not have tinkered?
may you not have tinkered?
may he not have tinkered?
may we not have tinkered?
may you not have tinkered?
may they not have tinkered? 	may I not have been tinkering?
may you not have been tinkering?
may he not have been tinkering?
may we not have been tinkering?
may you not have been tinkering?
may they not have been tinkering?