English verb conjugation
COULD SOLFA

Regular verb: solfa - solfaed - solfaed

Affirmation

Simple form	V-ing form
I could solfa you could solfa she could solfa we could solfa you could solfa they could solfa	I could be solfaing you could be solfaing she could be solfaing we could be solfaing you could be solfaing they could be solfaing
Perfect	V-ing perfect
I could have solfaed you could have solfaed she could have solfaed we could have solfaed you could have solfaed they could have solfaed	I could have been solfaing you could have been solfaing she could have been solfaing we could have been solfaing you could have been solfaing they could have been solfaing

Negation

Simple form	V-ing form
I couldn't solfa you couldn't solfa she couldn't solfa we couldn't solfa you couldn't solfa they couldn't solfa	I couldn't be solfaing you couldn't be solfaing she couldn't be solfaing we couldn't be solfaing you couldn't be solfaing they couldn't be solfaing
Perfect	V-ing perfect
I couldn't have solfaed you couldn't have solfaed she couldn't have solfaed we couldn't have solfaed you couldn't have solfaed they couldn't have solfaed	I couldn't have been solfaing you couldn't have been solfaing she couldn't have been solfaing we couldn't have been solfaing you couldn't have been solfaing they couldn't have been solfaing

Interrogative form

Simple form	V-ing form
could I solfa? could you solfa? could she solfa? could we solfa? could you solfa? could they solfa?	could I be solfaing? could you be solfaing? could she be solfaing? could we be solfaing? could you be solfaing? could they be solfaing?
Perfect	V-ing perfect
could I have solfaed? could you have solfaed? could she have solfaed? could we have solfaed? could you have solfaed? could they have solfaed?	could I have been solfaing? could you have been solfaing? could she have been solfaing? could we have been solfaing? could you have been solfaing? could they have been solfaing?

Interro-negative form

Simple form	V-ing form
couldn't I solfa? couldn't you solfa? couldn't she solfa? couldn't we solfa? couldn't you solfa? couldn't they solfa?	couldn't I be solfaing? couldn't you be solfaing? couldn't she be solfaing? couldn't we be solfaing? couldn't you be solfaing? couldn't they be solfaing?
Perfect	V-ing perfect
couldn't I have solfaed? couldn't you have solfaed? couldn't she have solfaed? couldn't we have solfaed? couldn't you have solfaed? couldn't they have solfaed?	couldn't I have been solfaing? couldn't you have been solfaing? couldn't she have been solfaing? couldn't we have been solfaing? couldn't you have been solfaing? couldn't they have been solfaing?