I can consternate you can consternate he can consternate we can consternate you can consternate they can consternate
V-ing form
I can be consternating you can be consternating he can be consternating we can be consternating you can be consternating they can be consternating
Perfect
I can have consternated you can have consternated he can have consternated we can have consternated you can have consternated they can have consternated
V-ing perfect
I can have been consternating you can have been consternating he can have been consternating we can have been consternating you can have been consternating they can have been consternating
Negation
Simple form
I cannot consternate you cannot consternate he cannot consternate we cannot consternate you cannot consternate they cannot consternate
V-ing form
I cannot be consternating you cannot be consternating he cannot be consternating we cannot be consternating you cannot be consternating they cannot be consternating
Perfect
I cannot have consternated you cannot have consternated he cannot have consternated we cannot have consternated you cannot have consternated they cannot have consternated
V-ing perfect
I cannot have been consternating you cannot have been consternating he cannot have been consternating we cannot have been consternating you cannot have been consternating they cannot have been consternating
Interrogative form
Simple form
can I consternate? can you consternate? can he consternate? can we consternate? can you consternate? can they consternate?
V-ing form
can I be consternating? can you be consternating? can he be consternating? can we be consternating? can you be consternating? can they be consternating?
Perfect
can I have consternated? can you have consternated? can he have consternated? can we have consternated? can you have consternated? can they have consternated?
V-ing perfect
can I have been consternating? can you have been consternating? can he have been consternating? can we have been consternating? can you have been consternating? can they have been consternating?
Interro-negative form
Simple form
can I not consternate? can you not consternate? can he not consternate? can we not consternate? can you not consternate? can they not consternate?
V-ing form
can I not be consternating? can you not be consternating? can he not be consternating? can we not be consternating? can you not be consternating? can they not be consternating?
Perfect
can I not have consternated? can you not have consternated? can he not have consternated? can we not have consternated? can you not have consternated? can they not have consternated?
V-ing perfect
can I not have been consternating? can you not have been consternating? can he not have been consternating? can we not have been consternating? can you not have been consternating? can they not have been consternating?