Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could dine dine you could dine dine he could dine dine we could dine dine you could dine dine they could dine dine
V-ing form
I could be dine dining you could be dine dining he could be dine dining we could be dine dining you could be dine dining they could be dine dining
Perfect
I could have dine dined you could have dine dined he could have dine dined we could have dine dined you could have dine dined they could have dine dined
V-ing perfect
I could have been dine dining you could have been dine dining he could have been dine dining we could have been dine dining you could have been dine dining they could have been dine dining
Negation
Simple form
I couldn't dine dine you couldn't dine dine he couldn't dine dine we couldn't dine dine you couldn't dine dine they couldn't dine dine
V-ing form
I couldn't be dine dining you couldn't be dine dining he couldn't be dine dining we couldn't be dine dining you couldn't be dine dining they couldn't be dine dining
Perfect
I couldn't have dine dined you couldn't have dine dined he couldn't have dine dined we couldn't have dine dined you couldn't have dine dined they couldn't have dine dined
V-ing perfect
I couldn't have been dine dining you couldn't have been dine dining he couldn't have been dine dining we couldn't have been dine dining you couldn't have been dine dining they couldn't have been dine dining
Interrogative form
Simple form
could I dine dine? could you dine dine? could he dine dine? could we dine dine? could you dine dine? could they dine dine?
V-ing form
could I be dine dining? could you be dine dining? could he be dine dining? could we be dine dining? could you be dine dining? could they be dine dining?
Perfect
could I have dine dined? could you have dine dined? could he have dine dined? could we have dine dined? could you have dine dined? could they have dine dined?
V-ing perfect
could I have been dine dining? could you have been dine dining? could he have been dine dining? could we have been dine dining? could you have been dine dining? could they have been dine dining?
Interro-negative form
Simple form
couldn't I dine dine? couldn't you dine dine? couldn't he dine dine? couldn't we dine dine? couldn't you dine dine? couldn't they dine dine?
V-ing form
couldn't I be dine dining? couldn't you be dine dining? couldn't he be dine dining? couldn't we be dine dining? couldn't you be dine dining? couldn't they be dine dining?
Perfect
couldn't I have dine dined? couldn't you have dine dined? couldn't he have dine dined? couldn't we have dine dined? couldn't you have dine dined? couldn't they have dine dined?
V-ing perfect
couldn't I have been dine dining? couldn't you have been dine dining? couldn't he have been dine dining? couldn't we have been dine dining? couldn't you have been dine dining? couldn't they have been dine dining?