I must draught-proof you must draught-proof she must draught-proof we must draught-proof you must draught-proof they must draught-proof
Forme en V-ing
I must be draught-proofing you must be draught-proofing she must be draught-proofing we must be draught-proofing you must be draught-proofing they must be draught-proofing
Perfect
I must have draught-proofed you must have draught-proofed she must have draught-proofed we must have draught-proofed you must have draught-proofed they must have draught-proofed
Perfect en V-ing
I must have been draught-proofing you must have been draught-proofing she must have been draught-proofing we must have been draught-proofing you must have been draught-proofing they must have been draught-proofing
Négation
Forme simple
I mustn't draught-proof you mustn't draught-proof she mustn't draught-proof we mustn't draught-proof you mustn't draught-proof they mustn't draught-proof
Forme en V-ing
I mustn't be draught-proofing you mustn't be draught-proofing she mustn't be draught-proofing we mustn't be draught-proofing you mustn't be draught-proofing they mustn't be draught-proofing
Perfect
I mustn't have draught-proofed you mustn't have draught-proofed she mustn't have draught-proofed we mustn't have draught-proofed you mustn't have draught-proofed they mustn't have draught-proofed
Perfect en V-ing
I mustn't have been draught-proofing you mustn't have been draught-proofing she mustn't have been draught-proofing we mustn't have been draught-proofing you mustn't have been draught-proofing they mustn't have been draught-proofing
Forme interrogative
Forme simple
must I draught-proof? must you draught-proof? must she draught-proof? must we draught-proof? must you draught-proof? must they draught-proof?
Forme en V-ing
must I be draught-proofing? must you be draught-proofing? must she be draught-proofing? must we be draught-proofing? must you be draught-proofing? must they be draught-proofing?
Perfect
must I have draught-proofed? must you have draught-proofed? must she have draught-proofed? must we have draught-proofed? must you have draught-proofed? must they have draught-proofed?
Perfect en V-ing
must I have been draught-proofing? must you have been draught-proofing? must she have been draught-proofing? must we have been draught-proofing? must you have been draught-proofing? must they have been draught-proofing?
Forme interro-négative
Forme simple
mustn't I draught-proof? mustn't you draught-proof? mustn't she draught-proof? mustn't we draught-proof? mustn't you draught-proof? mustn't they draught-proof?
Forme en V-ing
mustn't I be draught-proofing? mustn't you be draught-proofing? mustn't she be draught-proofing? mustn't we be draught-proofing? mustn't you be draught-proofing? mustn't they be draught-proofing?
Perfect
mustn't I have draught-proofed? mustn't you have draught-proofed? mustn't she have draught-proofed? mustn't we have draught-proofed? mustn't you have draught-proofed? mustn't they have draught-proofed?
Perfect en V-ing
mustn't I have been draught-proofing? mustn't you have been draught-proofing? mustn't she have been draught-proofing? mustn't we have been draught-proofing? mustn't you have been draught-proofing? mustn't they have been draught-proofing?