could watchdog
Regular verb: watchdog - watchdoged- watchdoged

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