English verb conjugation
COULD OWE

Regular verb: owe - owed - owed

Affirmation

Simple form	V-ing form
I could owe you could owe she could owe we could owe you could owe they could owe	I could be owing you could be owing she could be owing we could be owing you could be owing they could be owing
Perfect	V-ing perfect
I could have owed you could have owed she could have owed we could have owed you could have owed they could have owed	I could have been owing you could have been owing she could have been owing we could have been owing you could have been owing they could have been owing

Negation

Simple form	V-ing form
I couldn't owe you couldn't owe she couldn't owe we couldn't owe you couldn't owe they couldn't owe	I couldn't be owing you couldn't be owing she couldn't be owing we couldn't be owing you couldn't be owing they couldn't be owing
Perfect	V-ing perfect
I couldn't have owed you couldn't have owed she couldn't have owed we couldn't have owed you couldn't have owed they couldn't have owed	I couldn't have been owing you couldn't have been owing she couldn't have been owing we couldn't have been owing you couldn't have been owing they couldn't have been owing

Interrogative form

Simple form	V-ing form
could I owe? could you owe? could she owe? could we owe? could you owe? could they owe?	could I be owing? could you be owing? could she be owing? could we be owing? could you be owing? could they be owing?
Perfect	V-ing perfect
could I have owed? could you have owed? could she have owed? could we have owed? could you have owed? could they have owed?	could I have been owing? could you have been owing? could she have been owing? could we have been owing? could you have been owing? could they have been owing?

Interro-negative form

Simple form	V-ing form
couldn't I owe? couldn't you owe? couldn't she owe? couldn't we owe? couldn't you owe? couldn't they owe?	couldn't I be owing? couldn't you be owing? couldn't she be owing? couldn't we be owing? couldn't you be owing? couldn't they be owing?
Perfect	V-ing perfect
couldn't I have owed? couldn't you have owed? couldn't she have owed? couldn't we have owed? couldn't you have owed? couldn't they have owed?	couldn't I have been owing? couldn't you have been owing? couldn't she have been owing? couldn't we have been owing? couldn't you have been owing? couldn't they have been owing?