English verb conjugation
COULD GLOWER

Regular verb: glower - glowered - glowered

Affirmation

Simple form	V-ing form
I could glower you could glower he could glower we could glower you could glower they could glower	I could be glowering you could be glowering he could be glowering we could be glowering you could be glowering they could be glowering
Perfect	V-ing perfect
I could have glowered you could have glowered he could have glowered we could have glowered you could have glowered they could have glowered	I could have been glowering you could have been glowering he could have been glowering we could have been glowering you could have been glowering they could have been glowering

Negation

Simple form	V-ing form
I couldn't glower you couldn't glower he couldn't glower we couldn't glower you couldn't glower they couldn't glower	I couldn't be glowering you couldn't be glowering he couldn't be glowering we couldn't be glowering you couldn't be glowering they couldn't be glowering
Perfect	V-ing perfect
I couldn't have glowered you couldn't have glowered he couldn't have glowered we couldn't have glowered you couldn't have glowered they couldn't have glowered	I couldn't have been glowering you couldn't have been glowering he couldn't have been glowering we couldn't have been glowering you couldn't have been glowering they couldn't have been glowering

Interrogative form

Simple form	V-ing form
could I glower? could you glower? could he glower? could we glower? could you glower? could they glower?	could I be glowering? could you be glowering? could he be glowering? could we be glowering? could you be glowering? could they be glowering?
Perfect	V-ing perfect
could I have glowered? could you have glowered? could he have glowered? could we have glowered? could you have glowered? could they have glowered?	could I have been glowering? could you have been glowering? could he have been glowering? could we have been glowering? could you have been glowering? could they have been glowering?

Interro-negative form

Simple form	V-ing form
couldn't I glower? couldn't you glower? couldn't he glower? couldn't we glower? couldn't you glower? couldn't they glower?	couldn't I be glowering? couldn't you be glowering? couldn't he be glowering? couldn't we be glowering? couldn't you be glowering? couldn't they be glowering?
Perfect	V-ing perfect
couldn't I have glowered? couldn't you have glowered? couldn't he have glowered? couldn't we have glowered? couldn't you have glowered? couldn't they have glowered?	couldn't I have been glowering? couldn't you have been glowering? couldn't he have been glowering? couldn't we have been glowering? couldn't you have been glowering? couldn't they have been glowering?