English verb conjugation
COULD SHIMMER

Regular verb: shimmer - shimmered - shimmered

Affirmation

Simple form	V-ing form
I could shimmer you could shimmer he could shimmer we could shimmer you could shimmer they could shimmer	I could be shimmering you could be shimmering he could be shimmering we could be shimmering you could be shimmering they could be shimmering
Perfect	V-ing perfect
I could have shimmered you could have shimmered he could have shimmered we could have shimmered you could have shimmered they could have shimmered	I could have been shimmering you could have been shimmering he could have been shimmering we could have been shimmering you could have been shimmering they could have been shimmering

Negation

Simple form	V-ing form
I couldn't shimmer you couldn't shimmer he couldn't shimmer we couldn't shimmer you couldn't shimmer they couldn't shimmer	I couldn't be shimmering you couldn't be shimmering he couldn't be shimmering we couldn't be shimmering you couldn't be shimmering they couldn't be shimmering
Perfect	V-ing perfect
I couldn't have shimmered you couldn't have shimmered he couldn't have shimmered we couldn't have shimmered you couldn't have shimmered they couldn't have shimmered	I couldn't have been shimmering you couldn't have been shimmering he couldn't have been shimmering we couldn't have been shimmering you couldn't have been shimmering they couldn't have been shimmering

Interrogative form

Simple form	V-ing form
could I shimmer? could you shimmer? could he shimmer? could we shimmer? could you shimmer? could they shimmer?	could I be shimmering? could you be shimmering? could he be shimmering? could we be shimmering? could you be shimmering? could they be shimmering?
Perfect	V-ing perfect
could I have shimmered? could you have shimmered? could he have shimmered? could we have shimmered? could you have shimmered? could they have shimmered?	could I have been shimmering? could you have been shimmering? could he have been shimmering? could we have been shimmering? could you have been shimmering? could they have been shimmering?

Interro-negative form

Simple form	V-ing form
couldn't I shimmer? couldn't you shimmer? couldn't he shimmer? couldn't we shimmer? couldn't you shimmer? couldn't they shimmer?	couldn't I be shimmering? couldn't you be shimmering? couldn't he be shimmering? couldn't we be shimmering? couldn't you be shimmering? couldn't they be shimmering?
Perfect	V-ing perfect
couldn't I have shimmered? couldn't you have shimmered? couldn't he have shimmered? couldn't we have shimmered? couldn't you have shimmered? couldn't they have shimmered?	couldn't I have been shimmering? couldn't you have been shimmering? couldn't he have been shimmering? couldn't we have been shimmering? couldn't you have been shimmering? couldn't they have been shimmering?