English verb conjugation
COULD GLOW

Regular verb: glow - glowed - glowed

Affirmation

Simple form	V-ing form
I could glow you could glow he could glow we could glow you could glow they could glow	I could be glowing you could be glowing he could be glowing we could be glowing you could be glowing they could be glowing
Perfect	V-ing perfect
I could have glowed you could have glowed he could have glowed we could have glowed you could have glowed they could have glowed	I could have been glowing you could have been glowing he could have been glowing we could have been glowing you could have been glowing they could have been glowing

Negation

Simple form	V-ing form
I could not glow you could not glow he could not glow we could not glow you could not glow they could not glow	I could not be glowing you could not be glowing he could not be glowing we could not be glowing you could not be glowing they could not be glowing
Perfect	V-ing perfect
I could not have glowed you could not have glowed he could not have glowed we could not have glowed you could not have glowed they could not have glowed	I could not have been glowing you could not have been glowing he could not have been glowing we could not have been glowing you could not have been glowing they could not have been glowing

Interrogative form

Simple form	V-ing form
could I glow? could you glow? could he glow? could we glow? could you glow? could they glow?	could I be glowing? could you be glowing? could he be glowing? could we be glowing? could you be glowing? could they be glowing?
Perfect	V-ing perfect
could I have glowed? could you have glowed? could he have glowed? could we have glowed? could you have glowed? could they have glowed?	could I have been glowing? could you have been glowing? could he have been glowing? could we have been glowing? could you have been glowing? could they have been glowing?

Interro-negative form

Simple form	V-ing form
could I not glow? could you not glow? could he not glow? could we not glow? could you not glow? could they not glow?	could I not be glowing? could you not be glowing? could he not be glowing? could we not be glowing? could you not be glowing? could they not be glowing?
Perfect	V-ing perfect
could I not have glowed? could you not have glowed? could he not have glowed? could we not have glowed? could you not have glowed? could they not have glowed?	could I not have been glowing? could you not have been glowing? could he not have been glowing? could we not have been glowing? could you not have been glowing? could they not have been glowing?