I must scrape you must scrape he must scrape we must scrape you must scrape they must scrape
V-ing form
I must be scraping you must be scraping he must be scraping we must be scraping you must be scraping they must be scraping
Perfect
I must have scraped you must have scraped he must have scraped we must have scraped you must have scraped they must have scraped
V-ing perfect
I must have been scraping you must have been scraping he must have been scraping we must have been scraping you must have been scraping they must have been scraping
Negation
Simple form
I mustn't scrape you mustn't scrape he mustn't scrape we mustn't scrape you mustn't scrape they mustn't scrape
V-ing form
I mustn't be scraping you mustn't be scraping he mustn't be scraping we mustn't be scraping you mustn't be scraping they mustn't be scraping
Perfect
I mustn't have scraped you mustn't have scraped he mustn't have scraped we mustn't have scraped you mustn't have scraped they mustn't have scraped
V-ing perfect
I mustn't have been scraping you mustn't have been scraping he mustn't have been scraping we mustn't have been scraping you mustn't have been scraping they mustn't have been scraping
Interrogative form
Simple form
must I scrape? must you scrape? must he scrape? must we scrape? must you scrape? must they scrape?
V-ing form
must I be scraping? must you be scraping? must he be scraping? must we be scraping? must you be scraping? must they be scraping?
Perfect
must I have scraped? must you have scraped? must he have scraped? must we have scraped? must you have scraped? must they have scraped?
V-ing perfect
must I have been scraping? must you have been scraping? must he have been scraping? must we have been scraping? must you have been scraping? must they have been scraping?
Interro-negative form
Simple form
mustn't I scrape? mustn't you scrape? mustn't he scrape? mustn't we scrape? mustn't you scrape? mustn't they scrape?
V-ing form
mustn't I be scraping? mustn't you be scraping? mustn't he be scraping? mustn't we be scraping? mustn't you be scraping? mustn't they be scraping?
Perfect
mustn't I have scraped? mustn't you have scraped? mustn't he have scraped? mustn't we have scraped? mustn't you have scraped? mustn't they have scraped?
V-ing perfect
mustn't I have been scraping? mustn't you have been scraping? mustn't he have been scraping? mustn't we have been scraping? mustn't you have been scraping? mustn't they have been scraping?