I can menstruate you can menstruate he can menstruate we can menstruate you can menstruate they can menstruate
V-ing form
I can be menstruating you can be menstruating he can be menstruating we can be menstruating you can be menstruating they can be menstruating
Perfect
I can have menstruated you can have menstruated he can have menstruated we can have menstruated you can have menstruated they can have menstruated
V-ing perfect
I can have been menstruating you can have been menstruating he can have been menstruating we can have been menstruating you can have been menstruating they can have been menstruating
Negation
Simple form
I cannot menstruate you cannot menstruate he cannot menstruate we cannot menstruate you cannot menstruate they cannot menstruate
V-ing form
I cannot be menstruating you cannot be menstruating he cannot be menstruating we cannot be menstruating you cannot be menstruating they cannot be menstruating
Perfect
I cannot have menstruated you cannot have menstruated he cannot have menstruated we cannot have menstruated you cannot have menstruated they cannot have menstruated
V-ing perfect
I cannot have been menstruating you cannot have been menstruating he cannot have been menstruating we cannot have been menstruating you cannot have been menstruating they cannot have been menstruating
Interrogative form
Simple form
can I menstruate? can you menstruate? can he menstruate? can we menstruate? can you menstruate? can they menstruate?
V-ing form
can I be menstruating? can you be menstruating? can he be menstruating? can we be menstruating? can you be menstruating? can they be menstruating?
Perfect
can I have menstruated? can you have menstruated? can he have menstruated? can we have menstruated? can you have menstruated? can they have menstruated?
V-ing perfect
can I have been menstruating? can you have been menstruating? can he have been menstruating? can we have been menstruating? can you have been menstruating? can they have been menstruating?
Interro-negative form
Simple form
can I not menstruate? can you not menstruate? can he not menstruate? can we not menstruate? can you not menstruate? can they not menstruate?
V-ing form
can I not be menstruating? can you not be menstruating? can he not be menstruating? can we not be menstruating? can you not be menstruating? can they not be menstruating?
Perfect
can I not have menstruated? can you not have menstruated? can he not have menstruated? can we not have menstruated? can you not have menstruated? can they not have menstruated?
V-ing perfect
can I not have been menstruating? can you not have been menstruating? can he not have been menstruating? can we not have been menstruating? can you not have been menstruating? can they not have been menstruating?