I could touch-type you could touch-type he could touch-type we could touch-type you could touch-type they could touch-type
V-ing form
I could be touch-typing you could be touch-typing he could be touch-typing we could be touch-typing you could be touch-typing they could be touch-typing
Perfect
I could have touch-typed you could have touch-typed he could have touch-typed we could have touch-typed you could have touch-typed they could have touch-typed
V-ing perfect
I could have been touch-typing you could have been touch-typing he could have been touch-typing we could have been touch-typing you could have been touch-typing they could have been touch-typing
Negation
Simple form
I could not touch-type you could not touch-type he could not touch-type we could not touch-type you could not touch-type they could not touch-type
V-ing form
I could not be touch-typing you could not be touch-typing he could not be touch-typing we could not be touch-typing you could not be touch-typing they could not be touch-typing
Perfect
I could not have touch-typed you could not have touch-typed he could not have touch-typed we could not have touch-typed you could not have touch-typed they could not have touch-typed
V-ing perfect
I could not have been touch-typing you could not have been touch-typing he could not have been touch-typing we could not have been touch-typing you could not have been touch-typing they could not have been touch-typing
Interrogative form
Simple form
could I touch-type? could you touch-type? could he touch-type? could we touch-type? could you touch-type? could they touch-type?
V-ing form
could I be touch-typing? could you be touch-typing? could he be touch-typing? could we be touch-typing? could you be touch-typing? could they be touch-typing?
Perfect
could I have touch-typed? could you have touch-typed? could he have touch-typed? could we have touch-typed? could you have touch-typed? could they have touch-typed?
V-ing perfect
could I have been touch-typing? could you have been touch-typing? could he have been touch-typing? could we have been touch-typing? could you have been touch-typing? could they have been touch-typing?
Interro-negative form
Simple form
could I not touch-type? could you not touch-type? could he not touch-type? could we not touch-type? could you not touch-type? could they not touch-type?
V-ing form
could I not be touch-typing? could you not be touch-typing? could he not be touch-typing? could we not be touch-typing? could you not be touch-typing? could they not be touch-typing?
Perfect
could I not have touch-typed? could you not have touch-typed? could he not have touch-typed? could we not have touch-typed? could you not have touch-typed? could they not have touch-typed?
V-ing perfect
could I not have been touch-typing? could you not have been touch-typing? could he not have been touch-typing? could we not have been touch-typing? could you not have been touch-typing? could they not have been touch-typing?