English verb conjugation
COULD ARGUE

Regular verb: argue - argued - argued

Affirmation

Simple form	V-ing form
I could argue you could argue he could argue we could argue you could argue they could argue	I could be arguing you could be arguing he could be arguing we could be arguing you could be arguing they could be arguing
Perfect	V-ing perfect
I could have argued you could have argued he could have argued we could have argued you could have argued they could have argued	I could have been arguing you could have been arguing he could have been arguing we could have been arguing you could have been arguing they could have been arguing

Negation

Simple form	V-ing form
I couldn't argue you couldn't argue he couldn't argue we couldn't argue you couldn't argue they couldn't argue	I couldn't be arguing you couldn't be arguing he couldn't be arguing we couldn't be arguing you couldn't be arguing they couldn't be arguing
Perfect	V-ing perfect
I couldn't have argued you couldn't have argued he couldn't have argued we couldn't have argued you couldn't have argued they couldn't have argued	I couldn't have been arguing you couldn't have been arguing he couldn't have been arguing we couldn't have been arguing you couldn't have been arguing they couldn't have been arguing

Interrogative form

Simple form	V-ing form
could I argue? could you argue? could he argue? could we argue? could you argue? could they argue?	could I be arguing? could you be arguing? could he be arguing? could we be arguing? could you be arguing? could they be arguing?
Perfect	V-ing perfect
could I have argued? could you have argued? could he have argued? could we have argued? could you have argued? could they have argued?	could I have been arguing? could you have been arguing? could he have been arguing? could we have been arguing? could you have been arguing? could they have been arguing?

Interro-negative form

Simple form	V-ing form
couldn't I argue? couldn't you argue? couldn't he argue? couldn't we argue? couldn't you argue? couldn't they argue?	couldn't I be arguing? couldn't you be arguing? couldn't he be arguing? couldn't we be arguing? couldn't you be arguing? couldn't they be arguing?
Perfect	V-ing perfect
couldn't I have argued? couldn't you have argued? couldn't he have argued? couldn't we have argued? couldn't you have argued? couldn't they have argued?	couldn't I have been arguing? couldn't you have been arguing? couldn't he have been arguing? couldn't we have been arguing? couldn't you have been arguing? couldn't they have been arguing?