English verb conjugation
COULD SWIG

Regular verb: swig - swigged - swigged

Affirmation

Simple form	V-ing form
I could swig you could swig he could swig we could swig you could swig they could swig	I could be swigging you could be swigging he could be swigging we could be swigging you could be swigging they could be swigging
Perfect	V-ing perfect
I could have swigged you could have swigged he could have swigged we could have swigged you could have swigged they could have swigged	I could have been swigging you could have been swigging he could have been swigging we could have been swigging you could have been swigging they could have been swigging

Negation

Simple form	V-ing form
I couldn't swig you couldn't swig he couldn't swig we couldn't swig you couldn't swig they couldn't swig	I couldn't be swigging you couldn't be swigging he couldn't be swigging we couldn't be swigging you couldn't be swigging they couldn't be swigging
Perfect	V-ing perfect
I couldn't have swigged you couldn't have swigged he couldn't have swigged we couldn't have swigged you couldn't have swigged they couldn't have swigged	I couldn't have been swigging you couldn't have been swigging he couldn't have been swigging we couldn't have been swigging you couldn't have been swigging they couldn't have been swigging

Interrogative form

Simple form	V-ing form
could I swig? could you swig? could he swig? could we swig? could you swig? could they swig?	could I be swigging? could you be swigging? could he be swigging? could we be swigging? could you be swigging? could they be swigging?
Perfect	V-ing perfect
could I have swigged? could you have swigged? could he have swigged? could we have swigged? could you have swigged? could they have swigged?	could I have been swigging? could you have been swigging? could he have been swigging? could we have been swigging? could you have been swigging? could they have been swigging?

Interro-negative form

Simple form	V-ing form
couldn't I swig? couldn't you swig? couldn't he swig? couldn't we swig? couldn't you swig? couldn't they swig?	couldn't I be swigging? couldn't you be swigging? couldn't he be swigging? couldn't we be swigging? couldn't you be swigging? couldn't they be swigging?
Perfect	V-ing perfect
couldn't I have swigged? couldn't you have swigged? couldn't he have swigged? couldn't we have swigged? couldn't you have swigged? couldn't they have swigged?	couldn't I have been swigging? couldn't you have been swigging? couldn't he have been swigging? couldn't we have been swigging? couldn't you have been swigging? couldn't they have been swigging?