I could disadvantage you could disadvantage she could disadvantage we could disadvantage you could disadvantage they could disadvantage
V-ing form
I could be disadvantaging you could be disadvantaging she could be disadvantaging we could be disadvantaging you could be disadvantaging they could be disadvantaging
Perfect
I could have disadvantaged you could have disadvantaged she could have disadvantaged we could have disadvantaged you could have disadvantaged they could have disadvantaged
V-ing perfect
I could have been disadvantaging you could have been disadvantaging she could have been disadvantaging we could have been disadvantaging you could have been disadvantaging they could have been disadvantaging
Negation
Simple form
I couldn't disadvantage you couldn't disadvantage she couldn't disadvantage we couldn't disadvantage you couldn't disadvantage they couldn't disadvantage
V-ing form
I couldn't be disadvantaging you couldn't be disadvantaging she couldn't be disadvantaging we couldn't be disadvantaging you couldn't be disadvantaging they couldn't be disadvantaging
Perfect
I couldn't have disadvantaged you couldn't have disadvantaged she couldn't have disadvantaged we couldn't have disadvantaged you couldn't have disadvantaged they couldn't have disadvantaged
V-ing perfect
I couldn't have been disadvantaging you couldn't have been disadvantaging she couldn't have been disadvantaging we couldn't have been disadvantaging you couldn't have been disadvantaging they couldn't have been disadvantaging
Interrogative form
Simple form
could I disadvantage? could you disadvantage? could she disadvantage? could we disadvantage? could you disadvantage? could they disadvantage?
V-ing form
could I be disadvantaging? could you be disadvantaging? could she be disadvantaging? could we be disadvantaging? could you be disadvantaging? could they be disadvantaging?
Perfect
could I have disadvantaged? could you have disadvantaged? could she have disadvantaged? could we have disadvantaged? could you have disadvantaged? could they have disadvantaged?
V-ing perfect
could I have been disadvantaging? could you have been disadvantaging? could she have been disadvantaging? could we have been disadvantaging? could you have been disadvantaging? could they have been disadvantaging?
Interro-negative form
Simple form
couldn't I disadvantage? couldn't you disadvantage? couldn't she disadvantage? couldn't we disadvantage? couldn't you disadvantage? couldn't they disadvantage?
V-ing form
couldn't I be disadvantaging? couldn't you be disadvantaging? couldn't she be disadvantaging? couldn't we be disadvantaging? couldn't you be disadvantaging? couldn't they be disadvantaging?
Perfect
couldn't I have disadvantaged? couldn't you have disadvantaged? couldn't she have disadvantaged? couldn't we have disadvantaged? couldn't you have disadvantaged? couldn't they have disadvantaged?
V-ing perfect
couldn't I have been disadvantaging? couldn't you have been disadvantaging? couldn't she have been disadvantaging? couldn't we have been disadvantaging? couldn't you have been disadvantaging? couldn't they have been disadvantaging?