English verb conjugation
COULD SWOB

Regular verb: swob - swobed - swobed

Affirmation

Simple form	V-ing form
I could swob you could swob he could swob we could swob you could swob they could swob	I could be swobing you could be swobing he could be swobing we could be swobing you could be swobing they could be swobing
Perfect	V-ing perfect
I could have swobed you could have swobed he could have swobed we could have swobed you could have swobed they could have swobed	I could have been swobing you could have been swobing he could have been swobing we could have been swobing you could have been swobing they could have been swobing

Negation

Simple form	V-ing form
I could not swob you could not swob he could not swob we could not swob you could not swob they could not swob	I could not be swobing you could not be swobing he could not be swobing we could not be swobing you could not be swobing they could not be swobing
Perfect	V-ing perfect
I could not have swobed you could not have swobed he could not have swobed we could not have swobed you could not have swobed they could not have swobed	I could not have been swobing you could not have been swobing he could not have been swobing we could not have been swobing you could not have been swobing they could not have been swobing

Interrogative form

Simple form	V-ing form
could I swob? could you swob? could he swob? could we swob? could you swob? could they swob?	could I be swobing? could you be swobing? could he be swobing? could we be swobing? could you be swobing? could they be swobing?
Perfect	V-ing perfect
could I have swobed? could you have swobed? could he have swobed? could we have swobed? could you have swobed? could they have swobed?	could I have been swobing? could you have been swobing? could he have been swobing? could we have been swobing? could you have been swobing? could they have been swobing?

Interro-negative form

Simple form	V-ing form
could I not swob? could you not swob? could he not swob? could we not swob? could you not swob? could they not swob?	could I not be swobing? could you not be swobing? could he not be swobing? could we not be swobing? could you not be swobing? could they not be swobing?
Perfect	V-ing perfect
could I not have swobed? could you not have swobed? could he not have swobed? could we not have swobed? could you not have swobed? could they not have swobed?	could I not have been swobing? could you not have been swobing? could he not have been swobing? could we not have been swobing? could you not have been swobing? could they not have been swobing?