English verb conjugation
COULD RUBRICATE

Regular verb: rubricate - rubricated - rubricated

Affirmation

Simple form	V-ing form
I could rubricate you could rubricate he could rubricate we could rubricate you could rubricate they could rubricate	I could be rubricating you could be rubricating he could be rubricating we could be rubricating you could be rubricating they could be rubricating
Perfect	V-ing perfect
I could have rubricated you could have rubricated he could have rubricated we could have rubricated you could have rubricated they could have rubricated	I could have been rubricating you could have been rubricating he could have been rubricating we could have been rubricating you could have been rubricating they could have been rubricating

Negation

Simple form	V-ing form
I couldn't rubricate you couldn't rubricate he couldn't rubricate we couldn't rubricate you couldn't rubricate they couldn't rubricate	I couldn't be rubricating you couldn't be rubricating he couldn't be rubricating we couldn't be rubricating you couldn't be rubricating they couldn't be rubricating
Perfect	V-ing perfect
I couldn't have rubricated you couldn't have rubricated he couldn't have rubricated we couldn't have rubricated you couldn't have rubricated they couldn't have rubricated	I couldn't have been rubricating you couldn't have been rubricating he couldn't have been rubricating we couldn't have been rubricating you couldn't have been rubricating they couldn't have been rubricating

Interrogative form

Simple form	V-ing form
could I rubricate? could you rubricate? could he rubricate? could we rubricate? could you rubricate? could they rubricate?	could I be rubricating? could you be rubricating? could he be rubricating? could we be rubricating? could you be rubricating? could they be rubricating?
Perfect	V-ing perfect
could I have rubricated? could you have rubricated? could he have rubricated? could we have rubricated? could you have rubricated? could they have rubricated?	could I have been rubricating? could you have been rubricating? could he have been rubricating? could we have been rubricating? could you have been rubricating? could they have been rubricating?

Interro-negative form

Simple form	V-ing form
couldn't I rubricate? couldn't you rubricate? couldn't he rubricate? couldn't we rubricate? couldn't you rubricate? couldn't they rubricate?	couldn't I be rubricating? couldn't you be rubricating? couldn't he be rubricating? couldn't we be rubricating? couldn't you be rubricating? couldn't they be rubricating?
Perfect	V-ing perfect
couldn't I have rubricated? couldn't you have rubricated? couldn't he have rubricated? couldn't we have rubricated? couldn't you have rubricated? couldn't they have rubricated?	couldn't I have been rubricating? couldn't you have been rubricating? couldn't he have been rubricating? couldn't we have been rubricating? couldn't you have been rubricating? couldn't they have been rubricating?