English verb conjugation
COULD PRECANCEL

Regular verb: precancel - precanceled - precanceled

Affirmation

Simple form	V-ing form
I could precancel you could precancel he could precancel we could precancel you could precancel they could precancel	I could be precanceling you could be precanceling he could be precanceling we could be precanceling you could be precanceling they could be precanceling
Perfect	V-ing perfect
I could have precanceled you could have precanceled he could have precanceled we could have precanceled you could have precanceled they could have precanceled	I could have been precanceling you could have been precanceling he could have been precanceling we could have been precanceling you could have been precanceling they could have been precanceling

Negation

Simple form	V-ing form
I couldn't precancel you couldn't precancel he couldn't precancel we couldn't precancel you couldn't precancel they couldn't precancel	I couldn't be precanceling you couldn't be precanceling he couldn't be precanceling we couldn't be precanceling you couldn't be precanceling they couldn't be precanceling
Perfect	V-ing perfect
I couldn't have precanceled you couldn't have precanceled he couldn't have precanceled we couldn't have precanceled you couldn't have precanceled they couldn't have precanceled	I couldn't have been precanceling you couldn't have been precanceling he couldn't have been precanceling we couldn't have been precanceling you couldn't have been precanceling they couldn't have been precanceling

Interrogative form

Simple form	V-ing form
could I precancel? could you precancel? could he precancel? could we precancel? could you precancel? could they precancel?	could I be precanceling? could you be precanceling? could he be precanceling? could we be precanceling? could you be precanceling? could they be precanceling?
Perfect	V-ing perfect
could I have precanceled? could you have precanceled? could he have precanceled? could we have precanceled? could you have precanceled? could they have precanceled?	could I have been precanceling? could you have been precanceling? could he have been precanceling? could we have been precanceling? could you have been precanceling? could they have been precanceling?

Interro-negative form

Simple form	V-ing form
couldn't I precancel? couldn't you precancel? couldn't he precancel? couldn't we precancel? couldn't you precancel? couldn't they precancel?	couldn't I be precanceling? couldn't you be precanceling? couldn't he be precanceling? couldn't we be precanceling? couldn't you be precanceling? couldn't they be precanceling?
Perfect	V-ing perfect
couldn't I have precanceled? couldn't you have precanceled? couldn't he have precanceled? couldn't we have precanceled? couldn't you have precanceled? couldn't they have precanceled?	couldn't I have been precanceling? couldn't you have been precanceling? couldn't he have been precanceling? couldn't we have been precanceling? couldn't you have been precanceling? couldn't they have been precanceling?