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