English verb conjugation
COULD SHIMMER

Regular verb: shimmer - shimmered - shimmered

Affirmation

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