English verb conjugation
COULD UNRIDDLE

Regular verb: unriddle - unriddled - unriddled

Affirmation

Simple form	V-ing form
I could unriddle you could unriddle he could unriddle we could unriddle you could unriddle they could unriddle	I could be unriddling you could be unriddling he could be unriddling we could be unriddling you could be unriddling they could be unriddling
Perfect	V-ing perfect
I could have unriddled you could have unriddled he could have unriddled we could have unriddled you could have unriddled they could have unriddled	I could have been unriddling you could have been unriddling he could have been unriddling we could have been unriddling you could have been unriddling they could have been unriddling

Negation

Simple form	V-ing form
I could not unriddle you could not unriddle he could not unriddle we could not unriddle you could not unriddle they could not unriddle	I could not be unriddling you could not be unriddling he could not be unriddling we could not be unriddling you could not be unriddling they could not be unriddling
Perfect	V-ing perfect
I could not have unriddled you could not have unriddled he could not have unriddled we could not have unriddled you could not have unriddled they could not have unriddled	I could not have been unriddling you could not have been unriddling he could not have been unriddling we could not have been unriddling you could not have been unriddling they could not have been unriddling

Interrogative form

Simple form	V-ing form
could I unriddle? could you unriddle? could he unriddle? could we unriddle? could you unriddle? could they unriddle?	could I be unriddling? could you be unriddling? could he be unriddling? could we be unriddling? could you be unriddling? could they be unriddling?
Perfect	V-ing perfect
could I have unriddled? could you have unriddled? could he have unriddled? could we have unriddled? could you have unriddled? could they have unriddled?	could I have been unriddling? could you have been unriddling? could he have been unriddling? could we have been unriddling? could you have been unriddling? could they have been unriddling?

Interro-negative form

Simple form	V-ing form
could I not unriddle? could you not unriddle? could he not unriddle? could we not unriddle? could you not unriddle? could they not unriddle?	could I not be unriddling? could you not be unriddling? could he not be unriddling? could we not be unriddling? could you not be unriddling? could they not be unriddling?
Perfect	V-ing perfect
could I not have unriddled? could you not have unriddled? could he not have unriddled? could we not have unriddled? could you not have unriddled? could they not have unriddled?	could I not have been unriddling? could you not have been unriddling? could he not have been unriddling? could we not have been unriddling? could you not have been unriddling? could they not have been unriddling?