I can tear you can tear he can tear we can tear you can tear they can tear
V-ing form
I can be tearing you can be tearing he can be tearing we can be tearing you can be tearing they can be tearing
Perfect
I can have torn you can have torn he can have torn we can have torn you can have torn they can have torn
V-ing perfect
I can have been tearing you can have been tearing he can have been tearing we can have been tearing you can have been tearing they can have been tearing
Negation
Simple form
I can't tear you can't tear he can't tear we can't tear you can't tear they can't tear
V-ing form
I can't be tearing you can't be tearing he can't be tearing we can't be tearing you can't be tearing they can't be tearing
Perfect
I can't have torn you can't have torn he can't have torn we can't have torn you can't have torn they can't have torn
V-ing perfect
I can't have been tearing you can't have been tearing he can't have been tearing we can't have been tearing you can't have been tearing they can't have been tearing
Interrogative form
Simple form
can I tear? can you tear? can he tear? can we tear? can you tear? can they tear?
V-ing form
can I be tearing? can you be tearing? can he be tearing? can we be tearing? can you be tearing? can they be tearing?
Perfect
can I have torn? can you have torn? can he have torn? can we have torn? can you have torn? can they have torn?
V-ing perfect
can I have been tearing? can you have been tearing? can he have been tearing? can we have been tearing? can you have been tearing? can they have been tearing?
Interro-negative form
Simple form
can't I tear? can't you tear? can't he tear? can't we tear? can't you tear? can't they tear?
V-ing form
can't I be tearing? can't you be tearing? can't he be tearing? can't we be tearing? can't you be tearing? can't they be tearing?
Perfect
can't I have torn? can't you have torn? can't he have torn? can't we have torn? can't you have torn? can't they have torn?
V-ing perfect
can't I have been tearing? can't you have been tearing? can't he have been tearing? can't we have been tearing? can't you have been tearing? can't they have been tearing?