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