English verb conjugation
COULD UNRIG

Regular verb: unrig - unriged - unriged

Affirmation

Simple form	V-ing form
I could unrig you could unrig he could unrig we could unrig you could unrig they could unrig	I could be unriging you could be unriging he could be unriging we could be unriging you could be unriging they could be unriging
Perfect	V-ing perfect
I could have unriged you could have unriged he could have unriged we could have unriged you could have unriged they could have unriged	I could have been unriging you could have been unriging he could have been unriging we could have been unriging you could have been unriging they could have been unriging

Negation

Simple form	V-ing form
I couldn't unrig you couldn't unrig he couldn't unrig we couldn't unrig you couldn't unrig they couldn't unrig	I couldn't be unriging you couldn't be unriging he couldn't be unriging we couldn't be unriging you couldn't be unriging they couldn't be unriging
Perfect	V-ing perfect
I couldn't have unriged you couldn't have unriged he couldn't have unriged we couldn't have unriged you couldn't have unriged they couldn't have unriged	I couldn't have been unriging you couldn't have been unriging he couldn't have been unriging we couldn't have been unriging you couldn't have been unriging they couldn't have been unriging

Interrogative form

Simple form	V-ing form
could I unrig? could you unrig? could he unrig? could we unrig? could you unrig? could they unrig?	could I be unriging? could you be unriging? could he be unriging? could we be unriging? could you be unriging? could they be unriging?
Perfect	V-ing perfect
could I have unriged? could you have unriged? could he have unriged? could we have unriged? could you have unriged? could they have unriged?	could I have been unriging? could you have been unriging? could he have been unriging? could we have been unriging? could you have been unriging? could they have been unriging?

Interro-negative form

Simple form	V-ing form
couldn't I unrig? couldn't you unrig? couldn't he unrig? couldn't we unrig? couldn't you unrig? couldn't they unrig?	couldn't I be unriging? couldn't you be unriging? couldn't he be unriging? couldn't we be unriging? couldn't you be unriging? couldn't they be unriging?
Perfect	V-ing perfect
couldn't I have unriged? couldn't you have unriged? couldn't he have unriged? couldn't we have unriged? couldn't you have unriged? couldn't they have unriged?	couldn't I have been unriging? couldn't you have been unriging? couldn't he have been unriging? couldn't we have been unriging? couldn't you have been unriging? couldn't they have been unriging?