English verb conjugation
COULD DOOM

Regular verb: doom - doomed - doomed

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
I couldn't doom you couldn't doom he couldn't doom we couldn't doom you couldn't doom they couldn't doom	I couldn't be dooming you couldn't be dooming he couldn't be dooming we couldn't be dooming you couldn't be dooming they couldn't be dooming
Perfect	V-ing perfect
I couldn't have doomed you couldn't have doomed he couldn't have doomed we couldn't have doomed you couldn't have doomed they couldn't have doomed	I couldn't have been dooming you couldn't have been dooming he couldn't have been dooming we couldn't have been dooming you couldn't have been dooming they couldn't have been dooming

Interrogative form

Simple form	V-ing form
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?
Perfect	V-ing perfect
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
couldn't I doom? couldn't you doom? couldn't he doom? couldn't we doom? couldn't you doom? couldn't they doom?	couldn't I be dooming? couldn't you be dooming? couldn't he be dooming? couldn't we be dooming? couldn't you be dooming? couldn't they be dooming?
Perfect	V-ing perfect
couldn't I have doomed? couldn't you have doomed? couldn't he have doomed? couldn't we have doomed? couldn't you have doomed? couldn't they have doomed?	couldn't I have been dooming? couldn't you have been dooming? couldn't he have been dooming? couldn't we have been dooming? couldn't you have been dooming? couldn't they have been dooming?