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 couldn't swob you couldn't swob he couldn't swob we couldn't swob you couldn't swob they couldn't swob	I couldn't be swobing you couldn't be swobing he couldn't be swobing we couldn't be swobing you couldn't be swobing they couldn't be swobing
Perfect	V-ing perfect
I couldn't have swobed you couldn't have swobed he couldn't have swobed we couldn't have swobed you couldn't have swobed they couldn't have swobed	I couldn't have been swobing you couldn't have been swobing he couldn't have been swobing we couldn't have been swobing you couldn't have been swobing they couldn't 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
couldn't I swob? couldn't you swob? couldn't he swob? couldn't we swob? couldn't you swob? couldn't they swob?	couldn't I be swobing? couldn't you be swobing? couldn't he be swobing? couldn't we be swobing? couldn't you be swobing? couldn't they be swobing?
Perfect	V-ing perfect
couldn't I have swobed? couldn't you have swobed? couldn't he have swobed? couldn't we have swobed? couldn't you have swobed? couldn't they have swobed?	couldn't I have been swobing? couldn't you have been swobing? couldn't he have been swobing? couldn't we have been swobing? couldn't you have been swobing? couldn't they have been swobing?