English verb conjugation
COULD HICCOUGH

Regular verb: hiccough - hiccoughed - hiccoughed

Affirmation

Simple form	V-ing form
I could hiccough you could hiccough he could hiccough we could hiccough you could hiccough they could hiccough	I could be hiccoughing you could be hiccoughing he could be hiccoughing we could be hiccoughing you could be hiccoughing they could be hiccoughing
Perfect	V-ing perfect
I could have hiccoughed you could have hiccoughed he could have hiccoughed we could have hiccoughed you could have hiccoughed they could have hiccoughed	I could have been hiccoughing you could have been hiccoughing he could have been hiccoughing we could have been hiccoughing you could have been hiccoughing they could have been hiccoughing

Negation

Simple form	V-ing form
I couldn't hiccough you couldn't hiccough he couldn't hiccough we couldn't hiccough you couldn't hiccough they couldn't hiccough	I couldn't be hiccoughing you couldn't be hiccoughing he couldn't be hiccoughing we couldn't be hiccoughing you couldn't be hiccoughing they couldn't be hiccoughing
Perfect	V-ing perfect
I couldn't have hiccoughed you couldn't have hiccoughed he couldn't have hiccoughed we couldn't have hiccoughed you couldn't have hiccoughed they couldn't have hiccoughed	I couldn't have been hiccoughing you couldn't have been hiccoughing he couldn't have been hiccoughing we couldn't have been hiccoughing you couldn't have been hiccoughing they couldn't have been hiccoughing

Interrogative form

Simple form	V-ing form
could I hiccough? could you hiccough? could he hiccough? could we hiccough? could you hiccough? could they hiccough?	could I be hiccoughing? could you be hiccoughing? could he be hiccoughing? could we be hiccoughing? could you be hiccoughing? could they be hiccoughing?
Perfect	V-ing perfect
could I have hiccoughed? could you have hiccoughed? could he have hiccoughed? could we have hiccoughed? could you have hiccoughed? could they have hiccoughed?	could I have been hiccoughing? could you have been hiccoughing? could he have been hiccoughing? could we have been hiccoughing? could you have been hiccoughing? could they have been hiccoughing?

Interro-negative form

Simple form	V-ing form
couldn't I hiccough? couldn't you hiccough? couldn't he hiccough? couldn't we hiccough? couldn't you hiccough? couldn't they hiccough?	couldn't I be hiccoughing? couldn't you be hiccoughing? couldn't he be hiccoughing? couldn't we be hiccoughing? couldn't you be hiccoughing? couldn't they be hiccoughing?
Perfect	V-ing perfect
couldn't I have hiccoughed? couldn't you have hiccoughed? couldn't he have hiccoughed? couldn't we have hiccoughed? couldn't you have hiccoughed? couldn't they have hiccoughed?	couldn't I have been hiccoughing? couldn't you have been hiccoughing? couldn't he have been hiccoughing? couldn't we have been hiccoughing? couldn't you have been hiccoughing? couldn't they have been hiccoughing?