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