I can spend you can spend he can spend we can spend you can spend they can spend
V-ing form
I can be spending you can be spending he can be spending we can be spending you can be spending they can be spending
Perfect
I can have spent you can have spent he can have spent we can have spent you can have spent they can have spent
V-ing perfect
I can have been spending you can have been spending he can have been spending we can have been spending you can have been spending they can have been spending
Negation
Simple form
I cannot spend you cannot spend he cannot spend we cannot spend you cannot spend they cannot spend
V-ing form
I cannot be spending you cannot be spending he cannot be spending we cannot be spending you cannot be spending they cannot be spending
Perfect
I cannot have spent you cannot have spent he cannot have spent we cannot have spent you cannot have spent they cannot have spent
V-ing perfect
I cannot have been spending you cannot have been spending he cannot have been spending we cannot have been spending you cannot have been spending they cannot have been spending
Interrogative form
Simple form
can I spend? can you spend? can he spend? can we spend? can you spend? can they spend?
V-ing form
can I be spending? can you be spending? can he be spending? can we be spending? can you be spending? can they be spending?
Perfect
can I have spent? can you have spent? can he have spent? can we have spent? can you have spent? can they have spent?
V-ing perfect
can I have been spending? can you have been spending? can he have been spending? can we have been spending? can you have been spending? can they have been spending?
Interro-negative form
Simple form
can I not spend? can you not spend? can he not spend? can we not spend? can you not spend? can they not spend?
V-ing form
can I not be spending? can you not be spending? can he not be spending? can we not be spending? can you not be spending? can they not be spending?
Perfect
can I not have spent? can you not have spent? can he not have spent? can we not have spent? can you not have spent? can they not have spent?
V-ing perfect
can I not have been spending? can you not have been spending? can he not have been spending? can we not have been spending? can you not have been spending? can they not have been spending?