I must shimmer you must shimmer he must shimmer we must shimmer you must shimmer they must shimmer
V-ing form
I must be shimmering you must be shimmering he must be shimmering we must be shimmering you must be shimmering they must be shimmering
Perfect
I must have shimmered you must have shimmered he must have shimmered we must have shimmered you must have shimmered they must have shimmered
V-ing perfect
I must have been shimmering you must have been shimmering he must have been shimmering we must have been shimmering you must have been shimmering they must have been shimmering
Negation
Simple form
I must not shimmer you must not shimmer he must not shimmer we must not shimmer you must not shimmer they must not shimmer
V-ing form
I must not be shimmering you must not be shimmering he must not be shimmering we must not be shimmering you must not be shimmering they must not be shimmering
Perfect
I must not have shimmered you must not have shimmered he must not have shimmered we must not have shimmered you must not have shimmered they must not have shimmered
V-ing perfect
I must not have been shimmering you must not have been shimmering he must not have been shimmering we must not have been shimmering you must not have been shimmering they must not have been shimmering
Interrogative form
Simple form
must I shimmer? must you shimmer? must he shimmer? must we shimmer? must you shimmer? must they shimmer?
V-ing form
must I be shimmering? must you be shimmering? must he be shimmering? must we be shimmering? must you be shimmering? must they be shimmering?
Perfect
must I have shimmered? must you have shimmered? must he have shimmered? must we have shimmered? must you have shimmered? must they have shimmered?
V-ing perfect
must I have been shimmering? must you have been shimmering? must he have been shimmering? must we have been shimmering? must you have been shimmering? must they have been shimmering?
Interro-negative form
Simple form
must I not shimmer? must you not shimmer? must he not shimmer? must we not shimmer? must you not shimmer? must they not shimmer?
V-ing form
must I not be shimmering? must you not be shimmering? must he not be shimmering? must we not be shimmering? must you not be shimmering? must they not be shimmering?
Perfect
must I not have shimmered? must you not have shimmered? must he not have shimmered? must we not have shimmered? must you not have shimmered? must they not have shimmered?
V-ing perfect
must I not have been shimmering? must you not have been shimmering? must he not have been shimmering? must we not have been shimmering? must you not have been shimmering? must they not have been shimmering?