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