could hump
Regular verb: hump - humped- humped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could hump
you could hump
he could hump
we could hump
you could hump
they could hump 	I could be humping
you could be humping
he could be humping
we could be humping
you could be humping
they could be humping	I could have humped
you could have humped
he could have humped
we could have humped
you could have humped
they could have humped	I could have been humping
you could have been humping
he could have been humping
we could have been humping
you could have been humping
they could have been humping	

Negation 	
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I couldn't hump
you couldn't hump
he couldn't hump
we couldn't hump
you couldn't hump
they couldn't hump 	I couldn't be humping
you couldn't be humping
he couldn't be humping
we couldn't be humping
you couldn't be humping
they couldn't be humping	I couldn't have humped
you couldn't have humped
he couldn't have humped
we couldn't have humped
you couldn't have humped
they couldn't have humped	I couldn't have been humping
you couldn't have been humping
he couldn't have been humping
we couldn't have been humping
you couldn't have been humping
they couldn't have been humping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I hump?
could you hump?
could he hump?
could we hump?
could you hump?
could they hump? 	could I be humping?
could you be humping?
could he be humping?
could we be humping?
could you be humping?
could they be humping? 	could I have humped?
could you have humped?
could he have humped?
could we have humped?
could you have humped?
could they have humped? 	could I have been humping?
could you have been humping?
could he have been humping?
could we have been humping?
could you have been humping?
could they have been humping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I hump?
couldn't you hump?
couldn't he hump?
couldn't we hump?
couldn't you hump?
couldn't they hump? 	couldn't I be humping?
couldn't you be humping?
couldn't he be humping?
couldn't we be humping?
couldn't you be humping?
couldn't they be humping? 	couldn't I have humped?
couldn't you have humped?
couldn't he have humped?
couldn't we have humped?
couldn't you have humped?
couldn't they have humped? 	couldn't I have been humping?
couldn't you have been humping?
couldn't he have been humping?
couldn't we have been humping?
couldn't you have been humping?
couldn't they have been humping?