male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation COULD RIDDLE
Regular verb: riddle - riddled - riddled
Affirmation
Simple form
I could riddleyou could riddle
she could riddle
we could riddle
you could riddle
they could riddle
V-ing form
I could be riddlingyou could be riddling
she could be riddling
we could be riddling
you could be riddling
they could be riddling
Perfect
I could have riddledyou could have riddled
she could have riddled
we could have riddled
you could have riddled
they could have riddled
V-ing perfect
I could have been riddlingyou could have been riddling
she could have been riddling
we could have been riddling
you could have been riddling
they could have been riddling
Negation
Simple form
I couldn't riddleyou couldn't riddle
she couldn't riddle
we couldn't riddle
you couldn't riddle
they couldn't riddle
V-ing form
I couldn't be riddlingyou couldn't be riddling
she couldn't be riddling
we couldn't be riddling
you couldn't be riddling
they couldn't be riddling
Perfect
I couldn't have riddledyou couldn't have riddled
she couldn't have riddled
we couldn't have riddled
you couldn't have riddled
they couldn't have riddled
V-ing perfect
I couldn't have been riddlingyou couldn't have been riddling
she couldn't have been riddling
we couldn't have been riddling
you couldn't have been riddling
they couldn't have been riddling
Interrogative form
Simple form
could I riddle?could you riddle?
could she riddle?
could we riddle?
could you riddle?
could they riddle?
V-ing form
could I be riddling?could you be riddling?
could she be riddling?
could we be riddling?
could you be riddling?
could they be riddling?
Perfect
could I have riddled?could you have riddled?
could she have riddled?
could we have riddled?
could you have riddled?
could they have riddled?
V-ing perfect
could I have been riddling?could you have been riddling?
could she have been riddling?
could we have been riddling?
could you have been riddling?
could they have been riddling?
Interro-negative form
Simple form
couldn't I riddle?couldn't you riddle?
couldn't she riddle?
couldn't we riddle?
couldn't you riddle?
couldn't they riddle?
V-ing form
couldn't I be riddling?couldn't you be riddling?
couldn't she be riddling?
couldn't we be riddling?
couldn't you be riddling?
couldn't they be riddling?
Perfect
couldn't I have riddled?couldn't you have riddled?
couldn't she have riddled?
couldn't we have riddled?
couldn't you have riddled?
couldn't they have riddled?
V-ing perfect
couldn't I have been riddling?couldn't you have been riddling?
couldn't she have been riddling?
couldn't we have been riddling?
couldn't you have been riddling?
couldn't they have been riddling?