English verb conjugation
CAN SOLFA

Regular verb: solfa - solfaed - solfaed

Affirmation

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

Negation

Simple form	V-ing form
I cannot solfa you cannot solfa he cannot solfa we cannot solfa you cannot solfa they cannot solfa	I cannot be solfaing you cannot be solfaing he cannot be solfaing we cannot be solfaing you cannot be solfaing they cannot be solfaing
Perfect	V-ing perfect
I cannot have solfaed you cannot have solfaed he cannot have solfaed we cannot have solfaed you cannot have solfaed they cannot have solfaed	I cannot have been solfaing you cannot have been solfaing he cannot have been solfaing we cannot have been solfaing you cannot have been solfaing they cannot have been solfaing

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can I not solfa? can you not solfa? can he not solfa? can we not solfa? can you not solfa? can they not solfa?	can I not be solfaing? can you not be solfaing? can he not be solfaing? can we not be solfaing? can you not be solfaing? can they not be solfaing?
Perfect	V-ing perfect
can I not have solfaed? can you not have solfaed? can he not have solfaed? can we not have solfaed? can you not have solfaed? can they not have solfaed?	can I not have been solfaing? can you not have been solfaing? can he not have been solfaing? can we not have been solfaing? can you not have been solfaing? can they not have been solfaing?