I could extravagate you could extravagate he could extravagate we could extravagate you could extravagate they could extravagate
V-ing form
I could be extravagating you could be extravagating he could be extravagating we could be extravagating you could be extravagating they could be extravagating
Perfect
I could have extravagated you could have extravagated he 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 he could have been extravagating we could have been extravagating you could have been extravagating they could have been extravagating
Negation
Simple form
I could not extravagate you could not extravagate he could not extravagate we could not extravagate you could not extravagate they could not extravagate
V-ing form
I could not be extravagating you could not be extravagating he could not be extravagating we could not be extravagating you could not be extravagating they could not be extravagating
Perfect
I could not have extravagated you could not have extravagated he could not have extravagated we could not have extravagated you could not have extravagated they could not have extravagated
V-ing perfect
I could not have been extravagating you could not have been extravagating he could not have been extravagating we could not have been extravagating you could not have been extravagating they could not have been extravagating
Interrogative form
Simple form
could I extravagate? could you extravagate? could he extravagate? could we extravagate? could you extravagate? could they extravagate?
V-ing form
could I be extravagating? could you be extravagating? could he be extravagating? could we be extravagating? could you be extravagating? could they be extravagating?
Perfect
could I have extravagated? could you have extravagated? could he 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 he have been extravagating? could we have been extravagating? could you have been extravagating? could they have been extravagating?
Interro-negative form
Simple form
could I not extravagate? could you not extravagate? could he not extravagate? could we not extravagate? could you not extravagate? could they not extravagate?
V-ing form
could I not be extravagating? could you not be extravagating? could he not be extravagating? could we not be extravagating? could you not be extravagating? could they not be extravagating?
Perfect
could I not have extravagated? could you not have extravagated? could he not have extravagated? could we not have extravagated? could you not have extravagated? could they not have extravagated?
V-ing perfect
could I not have been extravagating? could you not have been extravagating? could he not have been extravagating? could we not have been extravagating? could you not have been extravagating? could they not have been extravagating?