I must spancel you must spancel he must spancel we must spancel you must spancel they must spancel
V-ing form
I must be spanceling you must be spanceling he must be spanceling we must be spanceling you must be spanceling they must be spanceling
Perfect
I must have spanceled you must have spanceled he must have spanceled we must have spanceled you must have spanceled they must have spanceled
V-ing perfect
I must have been spanceling you must have been spanceling he must have been spanceling we must have been spanceling you must have been spanceling they must have been spanceling
Negation
Simple form
I mustn't spancel you mustn't spancel he mustn't spancel we mustn't spancel you mustn't spancel they mustn't spancel
V-ing form
I mustn't be spanceling you mustn't be spanceling he mustn't be spanceling we mustn't be spanceling you mustn't be spanceling they mustn't be spanceling
Perfect
I mustn't have spanceled you mustn't have spanceled he mustn't have spanceled we mustn't have spanceled you mustn't have spanceled they mustn't have spanceled
V-ing perfect
I mustn't have been spanceling you mustn't have been spanceling he mustn't have been spanceling we mustn't have been spanceling you mustn't have been spanceling they mustn't have been spanceling
Interrogative form
Simple form
must I spancel? must you spancel? must he spancel? must we spancel? must you spancel? must they spancel?
V-ing form
must I be spanceling? must you be spanceling? must he be spanceling? must we be spanceling? must you be spanceling? must they be spanceling?
Perfect
must I have spanceled? must you have spanceled? must he have spanceled? must we have spanceled? must you have spanceled? must they have spanceled?
V-ing perfect
must I have been spanceling? must you have been spanceling? must he have been spanceling? must we have been spanceling? must you have been spanceling? must they have been spanceling?
Interro-negative form
Simple form
mustn't I spancel? mustn't you spancel? mustn't he spancel? mustn't we spancel? mustn't you spancel? mustn't they spancel?
V-ing form
mustn't I be spanceling? mustn't you be spanceling? mustn't he be spanceling? mustn't we be spanceling? mustn't you be spanceling? mustn't they be spanceling?
Perfect
mustn't I have spanceled? mustn't you have spanceled? mustn't he have spanceled? mustn't we have spanceled? mustn't you have spanceled? mustn't they have spanceled?
V-ing perfect
mustn't I have been spanceling? mustn't you have been spanceling? mustn't he have been spanceling? mustn't we have been spanceling? mustn't you have been spanceling? mustn't they have been spanceling?