English verb conjugation
COULD QUADRUPLICATE

Regular verb: quadruplicate - quadruplicated - quadruplicated

Affirmation

Simple form	V-ing form
I could quadruplicate you could quadruplicate she could quadruplicate we could quadruplicate you could quadruplicate they could quadruplicate	I could be quadruplicating you could be quadruplicating she could be quadruplicating we could be quadruplicating you could be quadruplicating they could be quadruplicating
Perfect	V-ing perfect
I could have quadruplicated you could have quadruplicated she could have quadruplicated we could have quadruplicated you could have quadruplicated they could have quadruplicated	I could have been quadruplicating you could have been quadruplicating she could have been quadruplicating we could have been quadruplicating you could have been quadruplicating they could have been quadruplicating

Negation

Simple form	V-ing form
I couldn't quadruplicate you couldn't quadruplicate she couldn't quadruplicate we couldn't quadruplicate you couldn't quadruplicate they couldn't quadruplicate	I couldn't be quadruplicating you couldn't be quadruplicating she couldn't be quadruplicating we couldn't be quadruplicating you couldn't be quadruplicating they couldn't be quadruplicating
Perfect	V-ing perfect
I couldn't have quadruplicated you couldn't have quadruplicated she couldn't have quadruplicated we couldn't have quadruplicated you couldn't have quadruplicated they couldn't have quadruplicated	I couldn't have been quadruplicating you couldn't have been quadruplicating she couldn't have been quadruplicating we couldn't have been quadruplicating you couldn't have been quadruplicating they couldn't have been quadruplicating

Interrogative form

Simple form	V-ing form
could I quadruplicate? could you quadruplicate? could she quadruplicate? could we quadruplicate? could you quadruplicate? could they quadruplicate?	could I be quadruplicating? could you be quadruplicating? could she be quadruplicating? could we be quadruplicating? could you be quadruplicating? could they be quadruplicating?
Perfect	V-ing perfect
could I have quadruplicated? could you have quadruplicated? could she have quadruplicated? could we have quadruplicated? could you have quadruplicated? could they have quadruplicated?	could I have been quadruplicating? could you have been quadruplicating? could she have been quadruplicating? could we have been quadruplicating? could you have been quadruplicating? could they have been quadruplicating?

Interro-negative form

Simple form	V-ing form
couldn't I quadruplicate? couldn't you quadruplicate? couldn't she quadruplicate? couldn't we quadruplicate? couldn't you quadruplicate? couldn't they quadruplicate?	couldn't I be quadruplicating? couldn't you be quadruplicating? couldn't she be quadruplicating? couldn't we be quadruplicating? couldn't you be quadruplicating? couldn't they be quadruplicating?
Perfect	V-ing perfect
couldn't I have quadruplicated? couldn't you have quadruplicated? couldn't she have quadruplicated? couldn't we have quadruplicated? couldn't you have quadruplicated? couldn't they have quadruplicated?	couldn't I have been quadruplicating? couldn't you have been quadruplicating? couldn't she have been quadruplicating? couldn't we have been quadruplicating? couldn't you have been quadruplicating? couldn't they have been quadruplicating?