English verb conjugation
COULD SWOB

Regular verb: swob - swobed - swobed

Affirmation

Simple form	V-ing form
I could swob you could swob she could swob we could swob you could swob they could swob	I could be swobing you could be swobing she 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 she 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 she 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 she 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 she 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 she 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 she 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 she swob? could we swob? could you swob? could they swob?	could I be swobing? could you be swobing? could she 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 she 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 she 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 she 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 she 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 she 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 she have been swobing? couldn't we have been swobing? couldn't you have been swobing? couldn't they have been swobing?