I can value you can value she can value we can value you can value they can value
V-ing form
I can be valuing you can be valuing she can be valuing we can be valuing you can be valuing they can be valuing
Perfect
I can have valued you can have valued she can have valued we can have valued you can have valued they can have valued
V-ing perfect
I can have been valuing you can have been valuing she can have been valuing we can have been valuing you can have been valuing they can have been valuing
Negation
Simple form
I cannot value you cannot value she cannot value we cannot value you cannot value they cannot value
V-ing form
I cannot be valuing you cannot be valuing she cannot be valuing we cannot be valuing you cannot be valuing they cannot be valuing
Perfect
I cannot have valued you cannot have valued she cannot have valued we cannot have valued you cannot have valued they cannot have valued
V-ing perfect
I cannot have been valuing you cannot have been valuing she cannot have been valuing we cannot have been valuing you cannot have been valuing they cannot have been valuing
Interrogative form
Simple form
can I value? can you value? can she value? can we value? can you value? can they value?
V-ing form
can I be valuing? can you be valuing? can she be valuing? can we be valuing? can you be valuing? can they be valuing?
Perfect
can I have valued? can you have valued? can she have valued? can we have valued? can you have valued? can they have valued?
V-ing perfect
can I have been valuing? can you have been valuing? can she have been valuing? can we have been valuing? can you have been valuing? can they have been valuing?
Interro-negative form
Simple form
can I not value? can you not value? can she not value? can we not value? can you not value? can they not value?
V-ing form
can I not be valuing? can you not be valuing? can she not be valuing? can we not be valuing? can you not be valuing? can they not be valuing?
Perfect
can I not have valued? can you not have valued? can she not have valued? can we not have valued? can you not have valued? can they not have valued?
V-ing perfect
can I not have been valuing? can you not have been valuing? can she not have been valuing? can we not have been valuing? can you not have been valuing? can they not have been valuing?