I can rule you can rule she can rule we can rule you can rule they can rule
V-ing form
I can be ruling you can be ruling she can be ruling we can be ruling you can be ruling they can be ruling
Perfect
I can have ruled you can have ruled she can have ruled we can have ruled you can have ruled they can have ruled
V-ing perfect
I can have been ruling you can have been ruling she can have been ruling we can have been ruling you can have been ruling they can have been ruling
Negation
Simple form
I can't rule you can't rule she can't rule we can't rule you can't rule they can't rule
V-ing form
I can't be ruling you can't be ruling she can't be ruling we can't be ruling you can't be ruling they can't be ruling
Perfect
I can't have ruled you can't have ruled she can't have ruled we can't have ruled you can't have ruled they can't have ruled
V-ing perfect
I can't have been ruling you can't have been ruling she can't have been ruling we can't have been ruling you can't have been ruling they can't have been ruling
Interrogative form
Simple form
can I rule? can you rule? can she rule? can we rule? can you rule? can they rule?
V-ing form
can I be ruling? can you be ruling? can she be ruling? can we be ruling? can you be ruling? can they be ruling?
Perfect
can I have ruled? can you have ruled? can she have ruled? can we have ruled? can you have ruled? can they have ruled?
V-ing perfect
can I have been ruling? can you have been ruling? can she have been ruling? can we have been ruling? can you have been ruling? can they have been ruling?
Interro-negative form
Simple form
can't I rule? can't you rule? can't she rule? can't we rule? can't you rule? can't they rule?
V-ing form
can't I be ruling? can't you be ruling? can't she be ruling? can't we be ruling? can't you be ruling? can't they be ruling?
Perfect
can't I have ruled? can't you have ruled? can't she have ruled? can't we have ruled? can't you have ruled? can't they have ruled?
V-ing perfect
can't I have been ruling? can't you have been ruling? can't she have been ruling? can't we have been ruling? can't you have been ruling? can't they have been ruling?