English verb conjugation
COULD UNRIDDLE

Regular verb: unriddle - unriddled - unriddled

Affirmation

Simple form	V-ing form
I could unriddle you could unriddle she could unriddle we could unriddle you could unriddle they could unriddle	I could be unriddling you could be unriddling she 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 she 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 she 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 couldn't unriddle you couldn't unriddle she couldn't unriddle we couldn't unriddle you couldn't unriddle they couldn't unriddle	I couldn't be unriddling you couldn't be unriddling she couldn't be unriddling we couldn't be unriddling you couldn't be unriddling they couldn't be unriddling
Perfect	V-ing perfect
I couldn't have unriddled you couldn't have unriddled she couldn't have unriddled we couldn't have unriddled you couldn't have unriddled they couldn't have unriddled	I couldn't have been unriddling you couldn't have been unriddling she couldn't have been unriddling we couldn't have been unriddling you couldn't have been unriddling they couldn't have been unriddling

Interrogative form

Simple form	V-ing form
could I unriddle? could you unriddle? could she unriddle? could we unriddle? could you unriddle? could they unriddle?	could I be unriddling? could you be unriddling? could she 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 she 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 she 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
couldn't I unriddle? couldn't you unriddle? couldn't she unriddle? couldn't we unriddle? couldn't you unriddle? couldn't they unriddle?	couldn't I be unriddling? couldn't you be unriddling? couldn't she be unriddling? couldn't we be unriddling? couldn't you be unriddling? couldn't they be unriddling?
Perfect	V-ing perfect
couldn't I have unriddled? couldn't you have unriddled? couldn't she have unriddled? couldn't we have unriddled? couldn't you have unriddled? couldn't they have unriddled?	couldn't I have been unriddling? couldn't you have been unriddling? couldn't she have been unriddling? couldn't we have been unriddling? couldn't you have been unriddling? couldn't they have been unriddling?