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