English verb conjugation
COULD WATCHDOG

Regular verb: watchdog - watchdoged - watchdoged

Affirmation

Simple form	V-ing form
I could watchdog you could watchdog she could watchdog we could watchdog you could watchdog they could watchdog	I could be watchdoging you could be watchdoging she could be watchdoging we could be watchdoging you could be watchdoging they could be watchdoging
Perfect	V-ing perfect
I could have watchdoged you could have watchdoged she could have watchdoged we could have watchdoged you could have watchdoged they could have watchdoged	I could have been watchdoging you could have been watchdoging she could have been watchdoging we could have been watchdoging you could have been watchdoging they could have been watchdoging

Negation

Simple form	V-ing form
I couldn't watchdog you couldn't watchdog she couldn't watchdog we couldn't watchdog you couldn't watchdog they couldn't watchdog	I couldn't be watchdoging you couldn't be watchdoging she couldn't be watchdoging we couldn't be watchdoging you couldn't be watchdoging they couldn't be watchdoging
Perfect	V-ing perfect
I couldn't have watchdoged you couldn't have watchdoged she couldn't have watchdoged we couldn't have watchdoged you couldn't have watchdoged they couldn't have watchdoged	I couldn't have been watchdoging you couldn't have been watchdoging she couldn't have been watchdoging we couldn't have been watchdoging you couldn't have been watchdoging they couldn't have been watchdoging

Interrogative form

Simple form	V-ing form
could I watchdog? could you watchdog? could she watchdog? could we watchdog? could you watchdog? could they watchdog?	could I be watchdoging? could you be watchdoging? could she be watchdoging? could we be watchdoging? could you be watchdoging? could they be watchdoging?
Perfect	V-ing perfect
could I have watchdoged? could you have watchdoged? could she have watchdoged? could we have watchdoged? could you have watchdoged? could they have watchdoged?	could I have been watchdoging? could you have been watchdoging? could she have been watchdoging? could we have been watchdoging? could you have been watchdoging? could they have been watchdoging?

Interro-negative form

Simple form	V-ing form
couldn't I watchdog? couldn't you watchdog? couldn't she watchdog? couldn't we watchdog? couldn't you watchdog? couldn't they watchdog?	couldn't I be watchdoging? couldn't you be watchdoging? couldn't she be watchdoging? couldn't we be watchdoging? couldn't you be watchdoging? couldn't they be watchdoging?
Perfect	V-ing perfect
couldn't I have watchdoged? couldn't you have watchdoged? couldn't she have watchdoged? couldn't we have watchdoged? couldn't you have watchdoged? couldn't they have watchdoged?	couldn't I have been watchdoging? couldn't you have been watchdoging? couldn't she have been watchdoging? couldn't we have been watchdoging? couldn't you have been watchdoging? couldn't they have been watchdoging?