I can secrete you can secrete she can secrete we can secrete you can secrete they can secrete
V-ing form
I can be secreting you can be secreting she can be secreting we can be secreting you can be secreting they can be secreting
Perfect
I can have secreted you can have secreted she can have secreted we can have secreted you can have secreted they can have secreted
V-ing perfect
I can have been secreting you can have been secreting she can have been secreting we can have been secreting you can have been secreting they can have been secreting
Negation
Simple form
I cannot secrete you cannot secrete she cannot secrete we cannot secrete you cannot secrete they cannot secrete
V-ing form
I cannot be secreting you cannot be secreting she cannot be secreting we cannot be secreting you cannot be secreting they cannot be secreting
Perfect
I cannot have secreted you cannot have secreted she cannot have secreted we cannot have secreted you cannot have secreted they cannot have secreted
V-ing perfect
I cannot have been secreting you cannot have been secreting she cannot have been secreting we cannot have been secreting you cannot have been secreting they cannot have been secreting
Interrogative form
Simple form
can I secrete? can you secrete? can she secrete? can we secrete? can you secrete? can they secrete?
V-ing form
can I be secreting? can you be secreting? can she be secreting? can we be secreting? can you be secreting? can they be secreting?
Perfect
can I have secreted? can you have secreted? can she have secreted? can we have secreted? can you have secreted? can they have secreted?
V-ing perfect
can I have been secreting? can you have been secreting? can she have been secreting? can we have been secreting? can you have been secreting? can they have been secreting?
Interro-negative form
Simple form
can I not secrete? can you not secrete? can she not secrete? can we not secrete? can you not secrete? can they not secrete?
V-ing form
can I not be secreting? can you not be secreting? can she not be secreting? can we not be secreting? can you not be secreting? can they not be secreting?
Perfect
can I not have secreted? can you not have secreted? can she not have secreted? can we not have secreted? can you not have secreted? can they not have secreted?
V-ing perfect
can I not have been secreting? can you not have been secreting? can she not have been secreting? can we not have been secreting? can you not have been secreting? can they not have been secreting?