I can locate you can locate she can locate we can locate you can locate they can locate
V-ing form
I can be locating you can be locating she can be locating we can be locating you can be locating they can be locating
Perfect
I can have located you can have located she can have located we can have located you can have located they can have located
V-ing perfect
I can have been locating you can have been locating she can have been locating we can have been locating you can have been locating they can have been locating
Negation
Simple form
I cannot locate you cannot locate she cannot locate we cannot locate you cannot locate they cannot locate
V-ing form
I cannot be locating you cannot be locating she cannot be locating we cannot be locating you cannot be locating they cannot be locating
Perfect
I cannot have located you cannot have located she cannot have located we cannot have located you cannot have located they cannot have located
V-ing perfect
I cannot have been locating you cannot have been locating she cannot have been locating we cannot have been locating you cannot have been locating they cannot have been locating
Interrogative form
Simple form
can I locate? can you locate? can she locate? can we locate? can you locate? can they locate?
V-ing form
can I be locating? can you be locating? can she be locating? can we be locating? can you be locating? can they be locating?
Perfect
can I have located? can you have located? can she have located? can we have located? can you have located? can they have located?
V-ing perfect
can I have been locating? can you have been locating? can she have been locating? can we have been locating? can you have been locating? can they have been locating?
Interro-negative form
Simple form
can I not locate? can you not locate? can she not locate? can we not locate? can you not locate? can they not locate?
V-ing form
can I not be locating? can you not be locating? can she not be locating? can we not be locating? can you not be locating? can they not be locating?
Perfect
can I not have located? can you not have located? can she not have located? can we not have located? can you not have located? can they not have located?
V-ing perfect
can I not have been locating? can you not have been locating? can she not have been locating? can we not have been locating? can you not have been locating? can they not have been locating?