I can multiply you can multiply he can multiply we can multiply you can multiply they can multiply
V-ing form
I can be multiplying you can be multiplying he can be multiplying we can be multiplying you can be multiplying they can be multiplying
Perfect
I can have multiplied you can have multiplied he can have multiplied we can have multiplied you can have multiplied they can have multiplied
V-ing perfect
I can have been multiplying you can have been multiplying he can have been multiplying we can have been multiplying you can have been multiplying they can have been multiplying
Negation
Simple form
I cannot multiply you cannot multiply he cannot multiply we cannot multiply you cannot multiply they cannot multiply
V-ing form
I cannot be multiplying you cannot be multiplying he cannot be multiplying we cannot be multiplying you cannot be multiplying they cannot be multiplying
Perfect
I cannot have multiplied you cannot have multiplied he cannot have multiplied we cannot have multiplied you cannot have multiplied they cannot have multiplied
V-ing perfect
I cannot have been multiplying you cannot have been multiplying he cannot have been multiplying we cannot have been multiplying you cannot have been multiplying they cannot have been multiplying
Interrogative form
Simple form
can I multiply? can you multiply? can he multiply? can we multiply? can you multiply? can they multiply?
V-ing form
can I be multiplying? can you be multiplying? can he be multiplying? can we be multiplying? can you be multiplying? can they be multiplying?
Perfect
can I have multiplied? can you have multiplied? can he have multiplied? can we have multiplied? can you have multiplied? can they have multiplied?
V-ing perfect
can I have been multiplying? can you have been multiplying? can he have been multiplying? can we have been multiplying? can you have been multiplying? can they have been multiplying?
Interro-negative form
Simple form
can I not multiply? can you not multiply? can he not multiply? can we not multiply? can you not multiply? can they not multiply?
V-ing form
can I not be multiplying? can you not be multiplying? can he not be multiplying? can we not be multiplying? can you not be multiplying? can they not be multiplying?
Perfect
can I not have multiplied? can you not have multiplied? can he not have multiplied? can we not have multiplied? can you not have multiplied? can they not have multiplied?
V-ing perfect
can I not have been multiplying? can you not have been multiplying? can he not have been multiplying? can we not have been multiplying? can you not have been multiplying? can they not have been multiplying?