may canker
Regular verb: canker - cankered- cankered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may canker
you may canker
he may canker
we may canker
you may canker
they may canker 	I may be cankering
you may be cankering
he may be cankering
we may be cankering
you may be cankering
they may be cankering	I may have cankered
you may have cankered
he may have cankered
we may have cankered
you may have cankered
they may have cankered	I may have been cankering
you may have been cankering
he may have been cankering
we may have been cankering
you may have been cankering
they may have been cankering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not canker
you may not canker
he may not canker
we may not canker
you may not canker
they may not canker 	I may not be cankering
you may not be cankering
he may not be cankering
we may not be cankering
you may not be cankering
they may not be cankering	I may not have cankered
you may not have cankered
he may not have cankered
we may not have cankered
you may not have cankered
they may not have cankered	I may not have been cankering
you may not have been cankering
he may not have been cankering
we may not have been cankering
you may not have been cankering
they may not have been cankering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I canker?
may you canker?
may he canker?
may we canker?
may you canker?
may they canker? 	may I be cankering?
may you be cankering?
may he be cankering?
may we be cankering?
may you be cankering?
may they be cankering? 	may I have cankered?
may you have cankered?
may he have cankered?
may we have cankered?
may you have cankered?
may they have cankered? 	may I have been cankering?
may you have been cankering?
may he have been cankering?
may we have been cankering?
may you have been cankering?
may they have been cankering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not canker?
may you not canker?
may he not canker?
may we not canker?
may you not canker?
may they not canker? 	may I not be cankering?
may you not be cankering?
may he not be cankering?
may we not be cankering?
may you not be cankering?
may they not be cankering? 	may I not have cankered?
may you not have cankered?
may he not have cankered?
may we not have cankered?
may you not have cankered?
may they not have cankered? 	may I not have been cankering?
may you not have been cankering?
may he not have been cankering?
may we not have been cankering?
may you not have been cankering?
may they not have been cankering?