English verb conjugation
COULD COMBAT

Regular verb: combat - combated - combated

Affirmation

Simple form	V-ing form
I could combat you could combat she could combat we could combat you could combat they could combat	I could be combating you could be combating she could be combating we could be combating you could be combating they could be combating
Perfect	V-ing perfect
I could have combated you could have combated she could have combated we could have combated you could have combated they could have combated	I could have been combating you could have been combating she could have been combating we could have been combating you could have been combating they could have been combating

Negation

Simple form	V-ing form
I couldn't combat you couldn't combat she couldn't combat we couldn't combat you couldn't combat they couldn't combat	I couldn't be combating you couldn't be combating she couldn't be combating we couldn't be combating you couldn't be combating they couldn't be combating
Perfect	V-ing perfect
I couldn't have combated you couldn't have combated she couldn't have combated we couldn't have combated you couldn't have combated they couldn't have combated	I couldn't have been combating you couldn't have been combating she couldn't have been combating we couldn't have been combating you couldn't have been combating they couldn't have been combating

Interrogative form

Simple form	V-ing form
could I combat? could you combat? could she combat? could we combat? could you combat? could they combat?	could I be combating? could you be combating? could she be combating? could we be combating? could you be combating? could they be combating?
Perfect	V-ing perfect
could I have combated? could you have combated? could she have combated? could we have combated? could you have combated? could they have combated?	could I have been combating? could you have been combating? could she have been combating? could we have been combating? could you have been combating? could they have been combating?

Interro-negative form

Simple form	V-ing form
couldn't I combat? couldn't you combat? couldn't she combat? couldn't we combat? couldn't you combat? couldn't they combat?	couldn't I be combating? couldn't you be combating? couldn't she be combating? couldn't we be combating? couldn't you be combating? couldn't they be combating?
Perfect	V-ing perfect
couldn't I have combated? couldn't you have combated? couldn't she have combated? couldn't we have combated? couldn't you have combated? couldn't they have combated?	couldn't I have been combating? couldn't you have been combating? couldn't she have been combating? couldn't we have been combating? couldn't you have been combating? couldn't they have been combating?