Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could keep house. manage you could keep house. manage he could keep house. manage we could keep house. manage you could keep house. manage they could keep house. manage
V-ing form
I could be keep house. managing you could be keep house. managing he could be keep house. managing we could be keep house. managing you could be keep house. managing they could be keep house. managing
Perfect
I could have keep house. managed you could have keep house. managed he could have keep house. managed we could have keep house. managed you could have keep house. managed they could have keep house. managed
V-ing perfect
I could have been keep house. managing you could have been keep house. managing he could have been keep house. managing we could have been keep house. managing you could have been keep house. managing they could have been keep house. managing
Negation
Simple form
I could not keep house. manage you could not keep house. manage he could not keep house. manage we could not keep house. manage you could not keep house. manage they could not keep house. manage
V-ing form
I could not be keep house. managing you could not be keep house. managing he could not be keep house. managing we could not be keep house. managing you could not be keep house. managing they could not be keep house. managing
Perfect
I could not have keep house. managed you could not have keep house. managed he could not have keep house. managed we could not have keep house. managed you could not have keep house. managed they could not have keep house. managed
V-ing perfect
I could not have been keep house. managing you could not have been keep house. managing he could not have been keep house. managing we could not have been keep house. managing you could not have been keep house. managing they could not have been keep house. managing
Interrogative form
Simple form
could I keep house. manage? could you keep house. manage? could he keep house. manage? could we keep house. manage? could you keep house. manage? could they keep house. manage?
V-ing form
could I be keep house. managing? could you be keep house. managing? could he be keep house. managing? could we be keep house. managing? could you be keep house. managing? could they be keep house. managing?
Perfect
could I have keep house. managed? could you have keep house. managed? could he have keep house. managed? could we have keep house. managed? could you have keep house. managed? could they have keep house. managed?
V-ing perfect
could I have been keep house. managing? could you have been keep house. managing? could he have been keep house. managing? could we have been keep house. managing? could you have been keep house. managing? could they have been keep house. managing?
Interro-negative form
Simple form
could I not keep house. manage? could you not keep house. manage? could he not keep house. manage? could we not keep house. manage? could you not keep house. manage? could they not keep house. manage?
V-ing form
could I not be keep house. managing? could you not be keep house. managing? could he not be keep house. managing? could we not be keep house. managing? could you not be keep house. managing? could they not be keep house. managing?
Perfect
could I not have keep house. managed? could you not have keep house. managed? could he not have keep house. managed? could we not have keep house. managed? could you not have keep house. managed? could they not have keep house. managed?
V-ing perfect
could I not have been keep house. managing? could you not have been keep house. managing? could he not have been keep house. managing? could we not have been keep house. managing? could you not have been keep house. managing? could they not have been keep house. managing?