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