I could anodize you could anodize she could anodize we could anodize you could anodize they could anodize
V-ing form
I could be anodizing you could be anodizing she could be anodizing we could be anodizing you could be anodizing they could be anodizing
Perfect
I could have anodized you could have anodized she 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 she 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 she 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 she 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 she 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 she 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 she anodize? could we anodize? could you anodize? could they anodize?
V-ing form
could I be anodizing? could you be anodizing? could she be anodizing? could we be anodizing? could you be anodizing? could they be anodizing?
Perfect
could I have anodized? could you have anodized? could she 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 she 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 she 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 she 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 she 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 she have been anodizing? couldn't we have been anodizing? couldn't you have been anodizing? couldn't they have been anodizing?