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