could touch
Regular verb: touch - touched- touched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could touch
you could touch
he could touch
we could touch
you could touch
they could touch 	I could be touching
you could be touching
he could be touching
we could be touching
you could be touching
they could be touching	I could have touched
you could have touched
he could have touched
we could have touched
you could have touched
they could have touched	I could have been touching
you could have been touching
he could have been touching
we could have been touching
you could have been touching
they could have been touching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not touch
you could not touch
he could not touch
we could not touch
you could not touch
they could not touch 	I could not be touching
you could not be touching
he could not be touching
we could not be touching
you could not be touching
they could not be touching	I could not have touched
you could not have touched
he could not have touched
we could not have touched
you could not have touched
they could not have touched	I could not have been touching
you could not have been touching
he could not have been touching
we could not have been touching
you could not have been touching
they could not have been touching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I touch?
could you touch?
could he touch?
could we touch?
could you touch?
could they touch? 	could I be touching?
could you be touching?
could he be touching?
could we be touching?
could you be touching?
could they be touching? 	could I have touched?
could you have touched?
could he have touched?
could we have touched?
could you have touched?
could they have touched? 	could I have been touching?
could you have been touching?
could he have been touching?
could we have been touching?
could you have been touching?
could they have been touching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not touch?
could you not touch?
could he not touch?
could we not touch?
could you not touch?
could they not touch? 	could I not be touching?
could you not be touching?
could he not be touching?
could we not be touching?
could you not be touching?
could they not be touching? 	could I not have touched?
could you not have touched?
could he not have touched?
could we not have touched?
could you not have touched?
could they not have touched? 	could I not have been touching?
could you not have been touching?
could he not have been touching?
could we not have been touching?
could you not have been touching?
could they not have been touching?