English verb conjugation
COULD TO

Regular verb: to - toed - toed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could to you could to he could to we could to you could to they could to	I could be toing you could be toing he could be toing we could be toing you could be toing they could be toing
Perfect	V-ing perfect
I could have toed you could have toed he could have toed we could have toed you could have toed they could have toed	I could have been toing you could have been toing he could have been toing we could have been toing you could have been toing they could have been toing

Negation

Simple form	V-ing form
I couldn't to you couldn't to he couldn't to we couldn't to you couldn't to they couldn't to	I couldn't be toing you couldn't be toing he couldn't be toing we couldn't be toing you couldn't be toing they couldn't be toing
Perfect	V-ing perfect
I couldn't have toed you couldn't have toed he couldn't have toed we couldn't have toed you couldn't have toed they couldn't have toed	I couldn't have been toing you couldn't have been toing he couldn't have been toing we couldn't have been toing you couldn't have been toing they couldn't have been toing

Interrogative form

Simple form	V-ing form
could I to? could you to? could he to? could we to? could you to? could they to?	could I be toing? could you be toing? could he be toing? could we be toing? could you be toing? could they be toing?
Perfect	V-ing perfect
could I have toed? could you have toed? could he have toed? could we have toed? could you have toed? could they have toed?	could I have been toing? could you have been toing? could he have been toing? could we have been toing? could you have been toing? could they have been toing?

Interro-negative form

Simple form	V-ing form
couldn't I to? couldn't you to? couldn't he to? couldn't we to? couldn't you to? couldn't they to?	couldn't I be toing? couldn't you be toing? couldn't he be toing? couldn't we be toing? couldn't you be toing? couldn't they be toing?
Perfect	V-ing perfect
couldn't I have toed? couldn't you have toed? couldn't he have toed? couldn't we have toed? couldn't you have toed? couldn't they have toed?	couldn't I have been toing? couldn't you have been toing? couldn't he have been toing? couldn't we have been toing? couldn't you have been toing? couldn't they have been toing?