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