I must spit-roast you must spit-roast she must spit-roast we must spit-roast you must spit-roast they must spit-roast
V-ing form
I must be spit-roasting you must be spit-roasting she must be spit-roasting we must be spit-roasting you must be spit-roasting they must be spit-roasting
Perfect
I must have spit-roasted you must have spit-roasted she must have spit-roasted we must have spit-roasted you must have spit-roasted they must have spit-roasted
V-ing perfect
I must have been spit-roasting you must have been spit-roasting she must have been spit-roasting we must have been spit-roasting you must have been spit-roasting they must have been spit-roasting
Negation
Simple form
I mustn't spit-roast you mustn't spit-roast she mustn't spit-roast we mustn't spit-roast you mustn't spit-roast they mustn't spit-roast
V-ing form
I mustn't be spit-roasting you mustn't be spit-roasting she mustn't be spit-roasting we mustn't be spit-roasting you mustn't be spit-roasting they mustn't be spit-roasting
Perfect
I mustn't have spit-roasted you mustn't have spit-roasted she mustn't have spit-roasted we mustn't have spit-roasted you mustn't have spit-roasted they mustn't have spit-roasted
V-ing perfect
I mustn't have been spit-roasting you mustn't have been spit-roasting she mustn't have been spit-roasting we mustn't have been spit-roasting you mustn't have been spit-roasting they mustn't have been spit-roasting
Interrogative form
Simple form
must I spit-roast? must you spit-roast? must she spit-roast? must we spit-roast? must you spit-roast? must they spit-roast?
V-ing form
must I be spit-roasting? must you be spit-roasting? must she be spit-roasting? must we be spit-roasting? must you be spit-roasting? must they be spit-roasting?
Perfect
must I have spit-roasted? must you have spit-roasted? must she have spit-roasted? must we have spit-roasted? must you have spit-roasted? must they have spit-roasted?
V-ing perfect
must I have been spit-roasting? must you have been spit-roasting? must she have been spit-roasting? must we have been spit-roasting? must you have been spit-roasting? must they have been spit-roasting?
Interro-negative form
Simple form
mustn't I spit-roast? mustn't you spit-roast? mustn't she spit-roast? mustn't we spit-roast? mustn't you spit-roast? mustn't they spit-roast?
V-ing form
mustn't I be spit-roasting? mustn't you be spit-roasting? mustn't she be spit-roasting? mustn't we be spit-roasting? mustn't you be spit-roasting? mustn't they be spit-roasting?
Perfect
mustn't I have spit-roasted? mustn't you have spit-roasted? mustn't she have spit-roasted? mustn't we have spit-roasted? mustn't you have spit-roasted? mustn't they have spit-roasted?
V-ing perfect
mustn't I have been spit-roasting? mustn't you have been spit-roasting? mustn't she have been spit-roasting? mustn't we have been spit-roasting? mustn't you have been spit-roasting? mustn't they have been spit-roasting?