English verb conjugation
COULD PATCH

Regular verb: patch - patched - patched

Affirmation

Simple form	V-ing form
I could patch you could patch he could patch we could patch you could patch they could patch	I could be patching you could be patching he could be patching we could be patching you could be patching they could be patching
Perfect	V-ing perfect
I could have patched you could have patched he could have patched we could have patched you could have patched they could have patched	I could have been patching you could have been patching he could have been patching we could have been patching you could have been patching they could have been patching

Negation

Simple form	V-ing form
I couldn't patch you couldn't patch he couldn't patch we couldn't patch you couldn't patch they couldn't patch	I couldn't be patching you couldn't be patching he couldn't be patching we couldn't be patching you couldn't be patching they couldn't be patching
Perfect	V-ing perfect
I couldn't have patched you couldn't have patched he couldn't have patched we couldn't have patched you couldn't have patched they couldn't have patched	I couldn't have been patching you couldn't have been patching he couldn't have been patching we couldn't have been patching you couldn't have been patching they couldn't have been patching

Interrogative form

Simple form	V-ing form
could I patch? could you patch? could he patch? could we patch? could you patch? could they patch?	could I be patching? could you be patching? could he be patching? could we be patching? could you be patching? could they be patching?
Perfect	V-ing perfect
could I have patched? could you have patched? could he have patched? could we have patched? could you have patched? could they have patched?	could I have been patching? could you have been patching? could he have been patching? could we have been patching? could you have been patching? could they have been patching?

Interro-negative form

Simple form	V-ing form
couldn't I patch? couldn't you patch? couldn't he patch? couldn't we patch? couldn't you patch? couldn't they patch?	couldn't I be patching? couldn't you be patching? couldn't he be patching? couldn't we be patching? couldn't you be patching? couldn't they be patching?
Perfect	V-ing perfect
couldn't I have patched? couldn't you have patched? couldn't he have patched? couldn't we have patched? couldn't you have patched? couldn't they have patched?	couldn't I have been patching? couldn't you have been patching? couldn't he have been patching? couldn't we have been patching? couldn't you have been patching? couldn't they have been patching?