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