I can coagulate you can coagulate he can coagulate we can coagulate you can coagulate they can coagulate
V-ing form
I can be coagulating you can be coagulating he can be coagulating we can be coagulating you can be coagulating they can be coagulating
Perfect
I can have coagulated you can have coagulated he can have coagulated we can have coagulated you can have coagulated they can have coagulated
V-ing perfect
I can have been coagulating you can have been coagulating he can have been coagulating we can have been coagulating you can have been coagulating they can have been coagulating
Negation
Simple form
I cannot coagulate you cannot coagulate he cannot coagulate we cannot coagulate you cannot coagulate they cannot coagulate
V-ing form
I cannot be coagulating you cannot be coagulating he cannot be coagulating we cannot be coagulating you cannot be coagulating they cannot be coagulating
Perfect
I cannot have coagulated you cannot have coagulated he cannot have coagulated we cannot have coagulated you cannot have coagulated they cannot have coagulated
V-ing perfect
I cannot have been coagulating you cannot have been coagulating he cannot have been coagulating we cannot have been coagulating you cannot have been coagulating they cannot have been coagulating
Interrogative form
Simple form
can I coagulate? can you coagulate? can he coagulate? can we coagulate? can you coagulate? can they coagulate?
V-ing form
can I be coagulating? can you be coagulating? can he be coagulating? can we be coagulating? can you be coagulating? can they be coagulating?
Perfect
can I have coagulated? can you have coagulated? can he have coagulated? can we have coagulated? can you have coagulated? can they have coagulated?
V-ing perfect
can I have been coagulating? can you have been coagulating? can he have been coagulating? can we have been coagulating? can you have been coagulating? can they have been coagulating?
Interro-negative form
Simple form
can I not coagulate? can you not coagulate? can he not coagulate? can we not coagulate? can you not coagulate? can they not coagulate?
V-ing form
can I not be coagulating? can you not be coagulating? can he not be coagulating? can we not be coagulating? can you not be coagulating? can they not be coagulating?
Perfect
can I not have coagulated? can you not have coagulated? can he not have coagulated? can we not have coagulated? can you not have coagulated? can they not have coagulated?
V-ing perfect
can I not have been coagulating? can you not have been coagulating? can he not have been coagulating? can we not have been coagulating? can you not have been coagulating? can they not have been coagulating?