may harness
Regular verb: harness - harnessed- harnessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may harness
you may harness
he may harness
we may harness
you may harness
they may harness 	I may be harnessing
you may be harnessing
he may be harnessing
we may be harnessing
you may be harnessing
they may be harnessing	I may have harnessed
you may have harnessed
he may have harnessed
we may have harnessed
you may have harnessed
they may have harnessed	I may have been harnessing
you may have been harnessing
he may have been harnessing
we may have been harnessing
you may have been harnessing
they may have been harnessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't harness
you mayn't harness
he mayn't harness
we mayn't harness
you mayn't harness
they mayn't harness 	I mayn't be harnessing
you mayn't be harnessing
he mayn't be harnessing
we mayn't be harnessing
you mayn't be harnessing
they mayn't be harnessing	I mayn't have harnessed
you mayn't have harnessed
he mayn't have harnessed
we mayn't have harnessed
you mayn't have harnessed
they mayn't have harnessed	I mayn't have been harnessing
you mayn't have been harnessing
he mayn't have been harnessing
we mayn't have been harnessing
you mayn't have been harnessing
they mayn't have been harnessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I harness?
may you harness?
may he harness?
may we harness?
may you harness?
may they harness? 	may I be harnessing?
may you be harnessing?
may he be harnessing?
may we be harnessing?
may you be harnessing?
may they be harnessing? 	may I have harnessed?
may you have harnessed?
may he have harnessed?
may we have harnessed?
may you have harnessed?
may they have harnessed? 	may I have been harnessing?
may you have been harnessing?
may he have been harnessing?
may we have been harnessing?
may you have been harnessing?
may they have been harnessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I harness?
mayn't you harness?
mayn't he harness?
mayn't we harness?
mayn't you harness?
mayn't they harness? 	mayn't I be harnessing?
mayn't you be harnessing?
mayn't he be harnessing?
mayn't we be harnessing?
mayn't you be harnessing?
mayn't they be harnessing? 	mayn't I have harnessed?
mayn't you have harnessed?
mayn't he have harnessed?
mayn't we have harnessed?
mayn't you have harnessed?
mayn't they have harnessed? 	mayn't I have been harnessing?
mayn't you have been harnessing?
mayn't he have been harnessing?
mayn't we have been harnessing?
mayn't you have been harnessing?
mayn't they have been harnessing?