I can preregulate you can preregulate he can preregulate we can preregulate you can preregulate they can preregulate
V-ing form
I can be preregulating you can be preregulating he can be preregulating we can be preregulating you can be preregulating they can be preregulating
Perfect
I can have preregulated you can have preregulated he can have preregulated we can have preregulated you can have preregulated they can have preregulated
V-ing perfect
I can have been preregulating you can have been preregulating he can have been preregulating we can have been preregulating you can have been preregulating they can have been preregulating
Negation
Simple form
I cannot preregulate you cannot preregulate he cannot preregulate we cannot preregulate you cannot preregulate they cannot preregulate
V-ing form
I cannot be preregulating you cannot be preregulating he cannot be preregulating we cannot be preregulating you cannot be preregulating they cannot be preregulating
Perfect
I cannot have preregulated you cannot have preregulated he cannot have preregulated we cannot have preregulated you cannot have preregulated they cannot have preregulated
V-ing perfect
I cannot have been preregulating you cannot have been preregulating he cannot have been preregulating we cannot have been preregulating you cannot have been preregulating they cannot have been preregulating
Interrogative form
Simple form
can I preregulate? can you preregulate? can he preregulate? can we preregulate? can you preregulate? can they preregulate?
V-ing form
can I be preregulating? can you be preregulating? can he be preregulating? can we be preregulating? can you be preregulating? can they be preregulating?
Perfect
can I have preregulated? can you have preregulated? can he have preregulated? can we have preregulated? can you have preregulated? can they have preregulated?
V-ing perfect
can I have been preregulating? can you have been preregulating? can he have been preregulating? can we have been preregulating? can you have been preregulating? can they have been preregulating?
Interro-negative form
Simple form
can I not preregulate? can you not preregulate? can he not preregulate? can we not preregulate? can you not preregulate? can they not preregulate?
V-ing form
can I not be preregulating? can you not be preregulating? can he not be preregulating? can we not be preregulating? can you not be preregulating? can they not be preregulating?
Perfect
can I not have preregulated? can you not have preregulated? can he not have preregulated? can we not have preregulated? can you not have preregulated? can they not have preregulated?
V-ing perfect
can I not have been preregulating? can you not have been preregulating? can he not have been preregulating? can we not have been preregulating? can you not have been preregulating? can they not have been preregulating?