Regular verb: shack - shacked - shacked
Simple form | V-ing form |
I must shack you must shack she must shack we must shack you must shack they must shack | I must be shacking you must be shacking she must be shacking we must be shacking you must be shacking they must be shacking |
Perfect | V-ing perfect |
I must have shacked you must have shacked she must have shacked we must have shacked you must have shacked they must have shacked | I must have been shacking you must have been shacking she must have been shacking we must have been shacking you must have been shacking they must have been shacking |
Simple form | V-ing form |
I mustn't shack you mustn't shack she mustn't shack we mustn't shack you mustn't shack they mustn't shack | I mustn't be shacking you mustn't be shacking she mustn't be shacking we mustn't be shacking you mustn't be shacking they mustn't be shacking |
Perfect | V-ing perfect |
I mustn't have shacked you mustn't have shacked she mustn't have shacked we mustn't have shacked you mustn't have shacked they mustn't have shacked | I mustn't have been shacking you mustn't have been shacking she mustn't have been shacking we mustn't have been shacking you mustn't have been shacking they mustn't have been shacking |
Simple form | V-ing form |
must I shack? must you shack? must she shack? must we shack? must you shack? must they shack? | must I be shacking? must you be shacking? must she be shacking? must we be shacking? must you be shacking? must they be shacking? |
Perfect | V-ing perfect |
must I have shacked? must you have shacked? must she have shacked? must we have shacked? must you have shacked? must they have shacked? | must I have been shacking? must you have been shacking? must she have been shacking? must we have been shacking? must you have been shacking? must they have been shacking? |
Simple form | V-ing form |
mustn't I shack? mustn't you shack? mustn't she shack? mustn't we shack? mustn't you shack? mustn't they shack? | mustn't I be shacking? mustn't you be shacking? mustn't she be shacking? mustn't we be shacking? mustn't you be shacking? mustn't they be shacking? |
Perfect | V-ing perfect |
mustn't I have shacked? mustn't you have shacked? mustn't she have shacked? mustn't we have shacked? mustn't you have shacked? mustn't they have shacked? | mustn't I have been shacking? mustn't you have been shacking? mustn't she have been shacking? mustn't we have been shacking? mustn't you have been shacking? mustn't they have been shacking? |