I can furnish you can furnish she can furnish we can furnish you can furnish they can furnish
V-ing form
I can be furnishing you can be furnishing she can be furnishing we can be furnishing you can be furnishing they can be furnishing
Perfect
I can have furnished you can have furnished she can have furnished we can have furnished you can have furnished they can have furnished
V-ing perfect
I can have been furnishing you can have been furnishing she can have been furnishing we can have been furnishing you can have been furnishing they can have been furnishing
Negation
Simple form
I cannot furnish you cannot furnish she cannot furnish we cannot furnish you cannot furnish they cannot furnish
V-ing form
I cannot be furnishing you cannot be furnishing she cannot be furnishing we cannot be furnishing you cannot be furnishing they cannot be furnishing
Perfect
I cannot have furnished you cannot have furnished she cannot have furnished we cannot have furnished you cannot have furnished they cannot have furnished
V-ing perfect
I cannot have been furnishing you cannot have been furnishing she cannot have been furnishing we cannot have been furnishing you cannot have been furnishing they cannot have been furnishing
Interrogative form
Simple form
can I furnish? can you furnish? can she furnish? can we furnish? can you furnish? can they furnish?
V-ing form
can I be furnishing? can you be furnishing? can she be furnishing? can we be furnishing? can you be furnishing? can they be furnishing?
Perfect
can I have furnished? can you have furnished? can she have furnished? can we have furnished? can you have furnished? can they have furnished?
V-ing perfect
can I have been furnishing? can you have been furnishing? can she have been furnishing? can we have been furnishing? can you have been furnishing? can they have been furnishing?
Interro-negative form
Simple form
can I not furnish? can you not furnish? can she not furnish? can we not furnish? can you not furnish? can they not furnish?
V-ing form
can I not be furnishing? can you not be furnishing? can she not be furnishing? can we not be furnishing? can you not be furnishing? can they not be furnishing?
Perfect
can I not have furnished? can you not have furnished? can she not have furnished? can we not have furnished? can you not have furnished? can they not have furnished?
V-ing perfect
can I not have been furnishing? can you not have been furnishing? can she not have been furnishing? can we not have been furnishing? can you not have been furnishing? can they not have been furnishing?