I can watchdog you can watchdog she can watchdog we can watchdog you can watchdog they can watchdog
V-ing form
I can be watchdoging you can be watchdoging she can be watchdoging we can be watchdoging you can be watchdoging they can be watchdoging
Perfect
I can have watchdoged you can have watchdoged she can have watchdoged we can have watchdoged you can have watchdoged they can have watchdoged
V-ing perfect
I can have been watchdoging you can have been watchdoging she can have been watchdoging we can have been watchdoging you can have been watchdoging they can have been watchdoging
Negation
Simple form
I can't watchdog you can't watchdog she can't watchdog we can't watchdog you can't watchdog they can't watchdog
V-ing form
I can't be watchdoging you can't be watchdoging she can't be watchdoging we can't be watchdoging you can't be watchdoging they can't be watchdoging
Perfect
I can't have watchdoged you can't have watchdoged she can't have watchdoged we can't have watchdoged you can't have watchdoged they can't have watchdoged
V-ing perfect
I can't have been watchdoging you can't have been watchdoging she can't have been watchdoging we can't have been watchdoging you can't have been watchdoging they can't have been watchdoging
Interrogative form
Simple form
can I watchdog? can you watchdog? can she watchdog? can we watchdog? can you watchdog? can they watchdog?
V-ing form
can I be watchdoging? can you be watchdoging? can she be watchdoging? can we be watchdoging? can you be watchdoging? can they be watchdoging?
Perfect
can I have watchdoged? can you have watchdoged? can she have watchdoged? can we have watchdoged? can you have watchdoged? can they have watchdoged?
V-ing perfect
can I have been watchdoging? can you have been watchdoging? can she have been watchdoging? can we have been watchdoging? can you have been watchdoging? can they have been watchdoging?
Interro-negative form
Simple form
can't I watchdog? can't you watchdog? can't she watchdog? can't we watchdog? can't you watchdog? can't they watchdog?
V-ing form
can't I be watchdoging? can't you be watchdoging? can't she be watchdoging? can't we be watchdoging? can't you be watchdoging? can't they be watchdoging?
Perfect
can't I have watchdoged? can't you have watchdoged? can't she have watchdoged? can't we have watchdoged? can't you have watchdoged? can't they have watchdoged?
V-ing perfect
can't I have been watchdoging? can't you have been watchdoging? can't she have been watchdoging? can't we have been watchdoging? can't you have been watchdoging? can't they have been watchdoging?