English verb conjugation
COULD RETHREAD

Regular verb: rethread - rethreaded - rethreaded

Affirmation

Simple form	V-ing form
I could rethread you could rethread he could rethread we could rethread you could rethread they could rethread	I could be rethreading you could be rethreading he could be rethreading we could be rethreading you could be rethreading they could be rethreading
Perfect	V-ing perfect
I could have rethreaded you could have rethreaded he could have rethreaded we could have rethreaded you could have rethreaded they could have rethreaded	I could have been rethreading you could have been rethreading he could have been rethreading we could have been rethreading you could have been rethreading they could have been rethreading

Negation

Simple form	V-ing form
I couldn't rethread you couldn't rethread he couldn't rethread we couldn't rethread you couldn't rethread they couldn't rethread	I couldn't be rethreading you couldn't be rethreading he couldn't be rethreading we couldn't be rethreading you couldn't be rethreading they couldn't be rethreading
Perfect	V-ing perfect
I couldn't have rethreaded you couldn't have rethreaded he couldn't have rethreaded we couldn't have rethreaded you couldn't have rethreaded they couldn't have rethreaded	I couldn't have been rethreading you couldn't have been rethreading he couldn't have been rethreading we couldn't have been rethreading you couldn't have been rethreading they couldn't have been rethreading

Interrogative form

Simple form	V-ing form
could I rethread? could you rethread? could he rethread? could we rethread? could you rethread? could they rethread?	could I be rethreading? could you be rethreading? could he be rethreading? could we be rethreading? could you be rethreading? could they be rethreading?
Perfect	V-ing perfect
could I have rethreaded? could you have rethreaded? could he have rethreaded? could we have rethreaded? could you have rethreaded? could they have rethreaded?	could I have been rethreading? could you have been rethreading? could he have been rethreading? could we have been rethreading? could you have been rethreading? could they have been rethreading?

Interro-negative form

Simple form	V-ing form
couldn't I rethread? couldn't you rethread? couldn't he rethread? couldn't we rethread? couldn't you rethread? couldn't they rethread?	couldn't I be rethreading? couldn't you be rethreading? couldn't he be rethreading? couldn't we be rethreading? couldn't you be rethreading? couldn't they be rethreading?
Perfect	V-ing perfect
couldn't I have rethreaded? couldn't you have rethreaded? couldn't he have rethreaded? couldn't we have rethreaded? couldn't you have rethreaded? couldn't they have rethreaded?	couldn't I have been rethreading? couldn't you have been rethreading? couldn't he have been rethreading? couldn't we have been rethreading? couldn't you have been rethreading? couldn't they have been rethreading?