English verb conjugation
COULD PREPROGRAM

Regular verb: preprogram - preprogramed - preprogramed

Affirmation

Simple form	V-ing form
I could preprogram you could preprogram he could preprogram we could preprogram you could preprogram they could preprogram	I could be preprograming you could be preprograming he could be preprograming we could be preprograming you could be preprograming they could be preprograming
Perfect	V-ing perfect
I could have preprogramed you could have preprogramed he could have preprogramed we could have preprogramed you could have preprogramed they could have preprogramed	I could have been preprograming you could have been preprograming he could have been preprograming we could have been preprograming you could have been preprograming they could have been preprograming

Negation

Simple form	V-ing form
I couldn't preprogram you couldn't preprogram he couldn't preprogram we couldn't preprogram you couldn't preprogram they couldn't preprogram	I couldn't be preprograming you couldn't be preprograming he couldn't be preprograming we couldn't be preprograming you couldn't be preprograming they couldn't be preprograming
Perfect	V-ing perfect
I couldn't have preprogramed you couldn't have preprogramed he couldn't have preprogramed we couldn't have preprogramed you couldn't have preprogramed they couldn't have preprogramed	I couldn't have been preprograming you couldn't have been preprograming he couldn't have been preprograming we couldn't have been preprograming you couldn't have been preprograming they couldn't have been preprograming

Interrogative form

Simple form	V-ing form
could I preprogram? could you preprogram? could he preprogram? could we preprogram? could you preprogram? could they preprogram?	could I be preprograming? could you be preprograming? could he be preprograming? could we be preprograming? could you be preprograming? could they be preprograming?
Perfect	V-ing perfect
could I have preprogramed? could you have preprogramed? could he have preprogramed? could we have preprogramed? could you have preprogramed? could they have preprogramed?	could I have been preprograming? could you have been preprograming? could he have been preprograming? could we have been preprograming? could you have been preprograming? could they have been preprograming?

Interro-negative form

Simple form	V-ing form
couldn't I preprogram? couldn't you preprogram? couldn't he preprogram? couldn't we preprogram? couldn't you preprogram? couldn't they preprogram?	couldn't I be preprograming? couldn't you be preprograming? couldn't he be preprograming? couldn't we be preprograming? couldn't you be preprograming? couldn't they be preprograming?
Perfect	V-ing perfect
couldn't I have preprogramed? couldn't you have preprogramed? couldn't he have preprogramed? couldn't we have preprogramed? couldn't you have preprogramed? couldn't they have preprogramed?	couldn't I have been preprograming? couldn't you have been preprograming? couldn't he have been preprograming? couldn't we have been preprograming? couldn't you have been preprograming? couldn't they have been preprograming?