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 can't murder you can't murder he can't murder we can't murder you can't murder they can't murder
V-ing form
I can't be murdering you can't be murdering he can't be murdering we can't be murdering you can't be murdering they can't be murdering
Perfect
I can't have murdered you can't have murdered he can't have murdered we can't have murdered you can't have murdered they can't have murdered
V-ing perfect
I can't have been murdering you can't have been murdering he can't have been murdering we can't have been murdering you can't have been murdering they can't 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't I murder? can't you murder? can't he murder? can't we murder? can't you murder? can't they murder?
V-ing form
can't I be murdering? can't you be murdering? can't he be murdering? can't we be murdering? can't you be murdering? can't they be murdering?
Perfect
can't I have murdered? can't you have murdered? can't he have murdered? can't we have murdered? can't you have murdered? can't they have murdered?
V-ing perfect
can't I have been murdering? can't you have been murdering? can't he have been murdering? can't we have been murdering? can't you have been murdering? can't they have been murdering?