English verb conjugation
COULD SQUIB

Regular verb: squib - squibed - squibed

Affirmation

Simple form	V-ing form
I could squib you could squib she could squib we could squib you could squib they could squib	I could be squibing you could be squibing she could be squibing we could be squibing you could be squibing they could be squibing
Perfect	V-ing perfect
I could have squibed you could have squibed she could have squibed we could have squibed you could have squibed they could have squibed	I could have been squibing you could have been squibing she could have been squibing we could have been squibing you could have been squibing they could have been squibing

Negation

Simple form	V-ing form
I couldn't squib you couldn't squib she couldn't squib we couldn't squib you couldn't squib they couldn't squib	I couldn't be squibing you couldn't be squibing she couldn't be squibing we couldn't be squibing you couldn't be squibing they couldn't be squibing
Perfect	V-ing perfect
I couldn't have squibed you couldn't have squibed she couldn't have squibed we couldn't have squibed you couldn't have squibed they couldn't have squibed	I couldn't have been squibing you couldn't have been squibing she couldn't have been squibing we couldn't have been squibing you couldn't have been squibing they couldn't have been squibing

Interrogative form

Simple form	V-ing form
could I squib? could you squib? could she squib? could we squib? could you squib? could they squib?	could I be squibing? could you be squibing? could she be squibing? could we be squibing? could you be squibing? could they be squibing?
Perfect	V-ing perfect
could I have squibed? could you have squibed? could she have squibed? could we have squibed? could you have squibed? could they have squibed?	could I have been squibing? could you have been squibing? could she have been squibing? could we have been squibing? could you have been squibing? could they have been squibing?

Interro-negative form

Simple form	V-ing form
couldn't I squib? couldn't you squib? couldn't she squib? couldn't we squib? couldn't you squib? couldn't they squib?	couldn't I be squibing? couldn't you be squibing? couldn't she be squibing? couldn't we be squibing? couldn't you be squibing? couldn't they be squibing?
Perfect	V-ing perfect
couldn't I have squibed? couldn't you have squibed? couldn't she have squibed? couldn't we have squibed? couldn't you have squibed? couldn't they have squibed?	couldn't I have been squibing? couldn't you have been squibing? couldn't she have been squibing? couldn't we have been squibing? couldn't you have been squibing? couldn't they have been squibing?