I can quadruplicate you can quadruplicate he can quadruplicate we can quadruplicate you can quadruplicate they can quadruplicate
V-ing form
I can be quadruplicating you can be quadruplicating he can be quadruplicating we can be quadruplicating you can be quadruplicating they can be quadruplicating
Perfect
I can have quadruplicated you can have quadruplicated he can have quadruplicated we can have quadruplicated you can have quadruplicated they can have quadruplicated
V-ing perfect
I can have been quadruplicating you can have been quadruplicating he can have been quadruplicating we can have been quadruplicating you can have been quadruplicating they can have been quadruplicating
Negation
Simple form
I can't quadruplicate you can't quadruplicate he can't quadruplicate we can't quadruplicate you can't quadruplicate they can't quadruplicate
V-ing form
I can't be quadruplicating you can't be quadruplicating he can't be quadruplicating we can't be quadruplicating you can't be quadruplicating they can't be quadruplicating
Perfect
I can't have quadruplicated you can't have quadruplicated he can't have quadruplicated we can't have quadruplicated you can't have quadruplicated they can't have quadruplicated
V-ing perfect
I can't have been quadruplicating you can't have been quadruplicating he can't have been quadruplicating we can't have been quadruplicating you can't have been quadruplicating they can't have been quadruplicating
Interrogative form
Simple form
can I quadruplicate? can you quadruplicate? can he quadruplicate? can we quadruplicate? can you quadruplicate? can they quadruplicate?
V-ing form
can I be quadruplicating? can you be quadruplicating? can he be quadruplicating? can we be quadruplicating? can you be quadruplicating? can they be quadruplicating?
Perfect
can I have quadruplicated? can you have quadruplicated? can he have quadruplicated? can we have quadruplicated? can you have quadruplicated? can they have quadruplicated?
V-ing perfect
can I have been quadruplicating? can you have been quadruplicating? can he have been quadruplicating? can we have been quadruplicating? can you have been quadruplicating? can they have been quadruplicating?
Interro-negative form
Simple form
can't I quadruplicate? can't you quadruplicate? can't he quadruplicate? can't we quadruplicate? can't you quadruplicate? can't they quadruplicate?
V-ing form
can't I be quadruplicating? can't you be quadruplicating? can't he be quadruplicating? can't we be quadruplicating? can't you be quadruplicating? can't they be quadruplicating?
Perfect
can't I have quadruplicated? can't you have quadruplicated? can't he have quadruplicated? can't we have quadruplicated? can't you have quadruplicated? can't they have quadruplicated?
V-ing perfect
can't I have been quadruplicating? can't you have been quadruplicating? can't he have been quadruplicating? can't we have been quadruplicating? can't you have been quadruplicating? can't they have been quadruplicating?