could doom
Regular verb: doom - doomed- doomed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could doom
you could doom
he could doom
we could doom
you could doom
they could doom 	I could be dooming
you could be dooming
he could be dooming
we could be dooming
you could be dooming
they could be dooming	I could have doomed
you could have doomed
he could have doomed
we could have doomed
you could have doomed
they could have doomed	I could have been dooming
you could have been dooming
he could have been dooming
we could have been dooming
you could have been dooming
they could have been dooming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not doom
you could not doom
he could not doom
we could not doom
you could not doom
they could not doom 	I could not be dooming
you could not be dooming
he could not be dooming
we could not be dooming
you could not be dooming
they could not be dooming	I could not have doomed
you could not have doomed
he could not have doomed
we could not have doomed
you could not have doomed
they could not have doomed	I could not have been dooming
you could not have been dooming
he could not have been dooming
we could not have been dooming
you could not have been dooming
they could not have been dooming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I doom?
could you doom?
could he doom?
could we doom?
could you doom?
could they doom? 	could I be dooming?
could you be dooming?
could he be dooming?
could we be dooming?
could you be dooming?
could they be dooming? 	could I have doomed?
could you have doomed?
could he have doomed?
could we have doomed?
could you have doomed?
could they have doomed? 	could I have been dooming?
could you have been dooming?
could he have been dooming?
could we have been dooming?
could you have been dooming?
could they have been dooming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not doom?
could you not doom?
could he not doom?
could we not doom?
could you not doom?
could they not doom? 	could I not be dooming?
could you not be dooming?
could he not be dooming?
could we not be dooming?
could you not be dooming?
could they not be dooming? 	could I not have doomed?
could you not have doomed?
could he not have doomed?
could we not have doomed?
could you not have doomed?
could they not have doomed? 	could I not have been dooming?
could you not have been dooming?
could he not have been dooming?
could we not have been dooming?
could you not have been dooming?
could they not have been dooming?