English verb conjugation
COULD FORDO

Irregular verb: fordo - fordid - fordone

Affirmation

Simple form	V-ing form
I could fordo you could fordo he could fordo we could fordo you could fordo they could fordo	I could be fordoing you could be fordoing he could be fordoing we could be fordoing you could be fordoing they could be fordoing
Perfect	V-ing perfect
I could have fordone you could have fordone he could have fordone we could have fordone you could have fordone they could have fordone	I could have been fordoing you could have been fordoing he could have been fordoing we could have been fordoing you could have been fordoing they could have been fordoing

Negation

Simple form	V-ing form
I couldn't fordo you couldn't fordo he couldn't fordo we couldn't fordo you couldn't fordo they couldn't fordo	I couldn't be fordoing you couldn't be fordoing he couldn't be fordoing we couldn't be fordoing you couldn't be fordoing they couldn't be fordoing
Perfect	V-ing perfect
I couldn't have fordone you couldn't have fordone he couldn't have fordone we couldn't have fordone you couldn't have fordone they couldn't have fordone	I couldn't have been fordoing you couldn't have been fordoing he couldn't have been fordoing we couldn't have been fordoing you couldn't have been fordoing they couldn't have been fordoing

Interrogative form

Simple form	V-ing form
could I fordo? could you fordo? could he fordo? could we fordo? could you fordo? could they fordo?	could I be fordoing? could you be fordoing? could he be fordoing? could we be fordoing? could you be fordoing? could they be fordoing?
Perfect	V-ing perfect
could I have fordone? could you have fordone? could he have fordone? could we have fordone? could you have fordone? could they have fordone?	could I have been fordoing? could you have been fordoing? could he have been fordoing? could we have been fordoing? could you have been fordoing? could they have been fordoing?

Interro-negative form

Simple form	V-ing form
couldn't I fordo? couldn't you fordo? couldn't he fordo? couldn't we fordo? couldn't you fordo? couldn't they fordo?	couldn't I be fordoing? couldn't you be fordoing? couldn't he be fordoing? couldn't we be fordoing? couldn't you be fordoing? couldn't they be fordoing?
Perfect	V-ing perfect
couldn't I have fordone? couldn't you have fordone? couldn't he have fordone? couldn't we have fordone? couldn't you have fordone? couldn't they have fordone?	couldn't I have been fordoing? couldn't you have been fordoing? couldn't he have been fordoing? couldn't we have been fordoing? couldn't you have been fordoing? couldn't they have been fordoing?