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 cannot tear you cannot tear he cannot tear we cannot tear you cannot tear they cannot tear
V-ing form
I cannot be tearing you cannot be tearing he cannot be tearing we cannot be tearing you cannot be tearing they cannot be tearing
Perfect
I cannot have torn you cannot have torn he cannot have torn we cannot have torn you cannot have torn they cannot have torn
V-ing perfect
I cannot have been tearing you cannot have been tearing he cannot have been tearing we cannot have been tearing you cannot have been tearing they cannot 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 I not tear? can you not tear? can he not tear? can we not tear? can you not tear? can they not tear?
V-ing form
can I not be tearing? can you not be tearing? can he not be tearing? can we not be tearing? can you not be tearing? can they not be tearing?
Perfect
can I not have torn? can you not have torn? can he not have torn? can we not have torn? can you not have torn? can they not have torn?
V-ing perfect
can I not have been tearing? can you not have been tearing? can he not have been tearing? can we not have been tearing? can you not have been tearing? can they not have been tearing?