I could enervate you could enervate he could enervate we could enervate you could enervate they could enervate
V-ing form
I could be enervating you could be enervating he could be enervating we could be enervating you could be enervating they could be enervating
Perfect
I could have enervated you could have enervated he could have enervated we could have enervated you could have enervated they could have enervated
V-ing perfect
I could have been enervating you could have been enervating he could have been enervating we could have been enervating you could have been enervating they could have been enervating
Negation
Simple form
I couldn't enervate you couldn't enervate he couldn't enervate we couldn't enervate you couldn't enervate they couldn't enervate
V-ing form
I couldn't be enervating you couldn't be enervating he couldn't be enervating we couldn't be enervating you couldn't be enervating they couldn't be enervating
Perfect
I couldn't have enervated you couldn't have enervated he couldn't have enervated we couldn't have enervated you couldn't have enervated they couldn't have enervated
V-ing perfect
I couldn't have been enervating you couldn't have been enervating he couldn't have been enervating we couldn't have been enervating you couldn't have been enervating they couldn't have been enervating
Interrogative form
Simple form
could I enervate? could you enervate? could he enervate? could we enervate? could you enervate? could they enervate?
V-ing form
could I be enervating? could you be enervating? could he be enervating? could we be enervating? could you be enervating? could they be enervating?
Perfect
could I have enervated? could you have enervated? could he have enervated? could we have enervated? could you have enervated? could they have enervated?
V-ing perfect
could I have been enervating? could you have been enervating? could he have been enervating? could we have been enervating? could you have been enervating? could they have been enervating?
Interro-negative form
Simple form
couldn't I enervate? couldn't you enervate? couldn't he enervate? couldn't we enervate? couldn't you enervate? couldn't they enervate?
V-ing form
couldn't I be enervating? couldn't you be enervating? couldn't he be enervating? couldn't we be enervating? couldn't you be enervating? couldn't they be enervating?
Perfect
couldn't I have enervated? couldn't you have enervated? couldn't he have enervated? couldn't we have enervated? couldn't you have enervated? couldn't they have enervated?
V-ing perfect
couldn't I have been enervating? couldn't you have been enervating? couldn't he have been enervating? couldn't we have been enervating? couldn't you have been enervating? couldn't they have been enervating?