I could paste you could paste he could paste we could paste you could paste they could paste
V-ing form
I could be pasting you could be pasting he could be pasting we could be pasting you could be pasting they could be pasting
Perfect
I could have pasted you could have pasted he could have pasted we could have pasted you could have pasted they could have pasted
V-ing perfect
I could have been pasting you could have been pasting he could have been pasting we could have been pasting you could have been pasting they could have been pasting
Negation
Simple form
I could not paste you could not paste he could not paste we could not paste you could not paste they could not paste
V-ing form
I could not be pasting you could not be pasting he could not be pasting we could not be pasting you could not be pasting they could not be pasting
Perfect
I could not have pasted you could not have pasted he could not have pasted we could not have pasted you could not have pasted they could not have pasted
V-ing perfect
I could not have been pasting you could not have been pasting he could not have been pasting we could not have been pasting you could not have been pasting they could not have been pasting
Interrogative form
Simple form
could I paste? could you paste? could he paste? could we paste? could you paste? could they paste?
V-ing form
could I be pasting? could you be pasting? could he be pasting? could we be pasting? could you be pasting? could they be pasting?
Perfect
could I have pasted? could you have pasted? could he have pasted? could we have pasted? could you have pasted? could they have pasted?
V-ing perfect
could I have been pasting? could you have been pasting? could he have been pasting? could we have been pasting? could you have been pasting? could they have been pasting?
Interro-negative form
Simple form
could I not paste? could you not paste? could he not paste? could we not paste? could you not paste? could they not paste?
V-ing form
could I not be pasting? could you not be pasting? could he not be pasting? could we not be pasting? could you not be pasting? could they not be pasting?
Perfect
could I not have pasted? could you not have pasted? could he not have pasted? could we not have pasted? could you not have pasted? could they not have pasted?
V-ing perfect
could I not have been pasting? could you not have been pasting? could he not have been pasting? could we not have been pasting? could you not have been pasting? could they not have been pasting?