English verb conjugation
COULD UNBLOCK

Regular verb: unblock - unblocked - unblocked

Affirmation

Simple form	V-ing form
I could unblock you could unblock he could unblock we could unblock you could unblock they could unblock	I could be unblocking you could be unblocking he could be unblocking we could be unblocking you could be unblocking they could be unblocking
Perfect	V-ing perfect
I could have unblocked you could have unblocked he could have unblocked we could have unblocked you could have unblocked they could have unblocked	I could have been unblocking you could have been unblocking he could have been unblocking we could have been unblocking you could have been unblocking they could have been unblocking

Negation

Simple form	V-ing form
I could not unblock you could not unblock he could not unblock we could not unblock you could not unblock they could not unblock	I could not be unblocking you could not be unblocking he could not be unblocking we could not be unblocking you could not be unblocking they could not be unblocking
Perfect	V-ing perfect
I could not have unblocked you could not have unblocked he could not have unblocked we could not have unblocked you could not have unblocked they could not have unblocked	I could not have been unblocking you could not have been unblocking he could not have been unblocking we could not have been unblocking you could not have been unblocking they could not have been unblocking

Interrogative form

Simple form	V-ing form
could I unblock? could you unblock? could he unblock? could we unblock? could you unblock? could they unblock?	could I be unblocking? could you be unblocking? could he be unblocking? could we be unblocking? could you be unblocking? could they be unblocking?
Perfect	V-ing perfect
could I have unblocked? could you have unblocked? could he have unblocked? could we have unblocked? could you have unblocked? could they have unblocked?	could I have been unblocking? could you have been unblocking? could he have been unblocking? could we have been unblocking? could you have been unblocking? could they have been unblocking?

Interro-negative form

Simple form	V-ing form
could I not unblock? could you not unblock? could he not unblock? could we not unblock? could you not unblock? could they not unblock?	could I not be unblocking? could you not be unblocking? could he not be unblocking? could we not be unblocking? could you not be unblocking? could they not be unblocking?
Perfect	V-ing perfect
could I not have unblocked? could you not have unblocked? could he not have unblocked? could we not have unblocked? could you not have unblocked? could they not have unblocked?	could I not have been unblocking? could you not have been unblocking? could he not have been unblocking? could we not have been unblocking? could you not have been unblocking? could they not have been unblocking?