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 can't preregulate you can't preregulate he can't preregulate we can't preregulate you can't preregulate they can't preregulate
V-ing form
I can't be preregulating you can't be preregulating he can't be preregulating we can't be preregulating you can't be preregulating they can't be preregulating
Perfect
I can't have preregulated you can't have preregulated he can't have preregulated we can't have preregulated you can't have preregulated they can't have preregulated
V-ing perfect
I can't have been preregulating you can't have been preregulating he can't have been preregulating we can't have been preregulating you can't have been preregulating they can't 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't I preregulate? can't you preregulate? can't he preregulate? can't we preregulate? can't you preregulate? can't they preregulate?
V-ing form
can't I be preregulating? can't you be preregulating? can't he be preregulating? can't we be preregulating? can't you be preregulating? can't they be preregulating?
Perfect
can't I have preregulated? can't you have preregulated? can't he have preregulated? can't we have preregulated? can't you have preregulated? can't they have preregulated?
V-ing perfect
can't I have been preregulating? can't you have been preregulating? can't he have been preregulating? can't we have been preregulating? can't you have been preregulating? can't they have been preregulating?