Regular verb: grunt - grunted - grunted
Simple form | V-ing form |
I must grunt you must grunt he must grunt we must grunt you must grunt they must grunt | I must be grunting you must be grunting he must be grunting we must be grunting you must be grunting they must be grunting |
Perfect | V-ing perfect |
I must have grunted you must have grunted he must have grunted we must have grunted you must have grunted they must have grunted | I must have been grunting you must have been grunting he must have been grunting we must have been grunting you must have been grunting they must have been grunting |
Simple form | V-ing form |
I mustn't grunt you mustn't grunt he mustn't grunt we mustn't grunt you mustn't grunt they mustn't grunt | I mustn't be grunting you mustn't be grunting he mustn't be grunting we mustn't be grunting you mustn't be grunting they mustn't be grunting |
Perfect | V-ing perfect |
I mustn't have grunted you mustn't have grunted he mustn't have grunted we mustn't have grunted you mustn't have grunted they mustn't have grunted | I mustn't have been grunting you mustn't have been grunting he mustn't have been grunting we mustn't have been grunting you mustn't have been grunting they mustn't have been grunting |
Simple form | V-ing form |
must I grunt? must you grunt? must he grunt? must we grunt? must you grunt? must they grunt? | must I be grunting? must you be grunting? must he be grunting? must we be grunting? must you be grunting? must they be grunting? |
Perfect | V-ing perfect |
must I have grunted? must you have grunted? must he have grunted? must we have grunted? must you have grunted? must they have grunted? | must I have been grunting? must you have been grunting? must he have been grunting? must we have been grunting? must you have been grunting? must they have been grunting? |
Simple form | V-ing form |
mustn't I grunt? mustn't you grunt? mustn't he grunt? mustn't we grunt? mustn't you grunt? mustn't they grunt? | mustn't I be grunting? mustn't you be grunting? mustn't he be grunting? mustn't we be grunting? mustn't you be grunting? mustn't they be grunting? |
Perfect | V-ing perfect |
mustn't I have grunted? mustn't you have grunted? mustn't he have grunted? mustn't we have grunted? mustn't you have grunted? mustn't they have grunted? | mustn't I have been grunting? mustn't you have been grunting? mustn't he have been grunting? mustn't we have been grunting? mustn't you have been grunting? mustn't they have been grunting? |