Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could touch touch you could touch touch he could touch touch we could touch touch you could touch touch they could touch touch
V-ing form
I could be touch touching you could be touch touching he could be touch touching we could be touch touching you could be touch touching they could be touch touching
Perfect
I could have touch touched you could have touch touched he could have touch touched we could have touch touched you could have touch touched they could have touch touched
V-ing perfect
I could have been touch touching you could have been touch touching he could have been touch touching we could have been touch touching you could have been touch touching they could have been touch touching
Negation
Simple form
I could not touch touch you could not touch touch he could not touch touch we could not touch touch you could not touch touch they could not touch touch
V-ing form
I could not be touch touching you could not be touch touching he could not be touch touching we could not be touch touching you could not be touch touching they could not be touch touching
Perfect
I could not have touch touched you could not have touch touched he could not have touch touched we could not have touch touched you could not have touch touched they could not have touch touched
V-ing perfect
I could not have been touch touching you could not have been touch touching he could not have been touch touching we could not have been touch touching you could not have been touch touching they could not have been touch touching
Interrogative form
Simple form
could I touch touch? could you touch touch? could he touch touch? could we touch touch? could you touch touch? could they touch touch?
V-ing form
could I be touch touching? could you be touch touching? could he be touch touching? could we be touch touching? could you be touch touching? could they be touch touching?
Perfect
could I have touch touched? could you have touch touched? could he have touch touched? could we have touch touched? could you have touch touched? could they have touch touched?
V-ing perfect
could I have been touch touching? could you have been touch touching? could he have been touch touching? could we have been touch touching? could you have been touch touching? could they have been touch touching?
Interro-negative form
Simple form
could I not touch touch? could you not touch touch? could he not touch touch? could we not touch touch? could you not touch touch? could they not touch touch?
V-ing form
could I not be touch touching? could you not be touch touching? could he not be touch touching? could we not be touch touching? could you not be touch touching? could they not be touch touching?
Perfect
could I not have touch touched? could you not have touch touched? could he not have touch touched? could we not have touch touched? could you not have touch touched? could they not have touch touched?
V-ing perfect
could I not have been touch touching? could you not have been touch touching? could he not have been touch touching? could we not have been touch touching? could you not have been touch touching? could they not have been touch touching?