I can murder you can murder he can murder we can murder you can murder they can murder
V-ing form
I can be murdering you can be murdering he can be murdering we can be murdering you can be murdering they can be murdering
Perfect
I can have murdered you can have murdered he can have murdered we can have murdered you can have murdered they can have murdered
V-ing perfect
I can have been murdering you can have been murdering he can have been murdering we can have been murdering you can have been murdering they can have been murdering
Negation
Simple form
I cannot murder you cannot murder he cannot murder we cannot murder you cannot murder they cannot murder
V-ing form
I cannot be murdering you cannot be murdering he cannot be murdering we cannot be murdering you cannot be murdering they cannot be murdering
Perfect
I cannot have murdered you cannot have murdered he cannot have murdered we cannot have murdered you cannot have murdered they cannot have murdered
V-ing perfect
I cannot have been murdering you cannot have been murdering he cannot have been murdering we cannot have been murdering you cannot have been murdering they cannot have been murdering
Interrogative form
Simple form
can I murder? can you murder? can he murder? can we murder? can you murder? can they murder?
V-ing form
can I be murdering? can you be murdering? can he be murdering? can we be murdering? can you be murdering? can they be murdering?
Perfect
can I have murdered? can you have murdered? can he have murdered? can we have murdered? can you have murdered? can they have murdered?
V-ing perfect
can I have been murdering? can you have been murdering? can he have been murdering? can we have been murdering? can you have been murdering? can they have been murdering?
Interro-negative form
Simple form
can I not murder? can you not murder? can he not murder? can we not murder? can you not murder? can they not murder?
V-ing form
can I not be murdering? can you not be murdering? can he not be murdering? can we not be murdering? can you not be murdering? can they not be murdering?
Perfect
can I not have murdered? can you not have murdered? can he not have murdered? can we not have murdered? can you not have murdered? can they not have murdered?
V-ing perfect
can I not have been murdering? can you not have been murdering? can he not have been murdering? can we not have been murdering? can you not have been murdering? can they not have been murdering?