English verb conjugation
COULD RUBBERSTAMP

Regular verb: rubberstamp - rubberstamped - rubberstamped

Affirmation

Simple form	V-ing form
I could rubberstamp you could rubberstamp he could rubberstamp we could rubberstamp you could rubberstamp they could rubberstamp	I could be rubberstamping you could be rubberstamping he could be rubberstamping we could be rubberstamping you could be rubberstamping they could be rubberstamping
Perfect	V-ing perfect
I could have rubberstamped you could have rubberstamped he could have rubberstamped we could have rubberstamped you could have rubberstamped they could have rubberstamped	I could have been rubberstamping you could have been rubberstamping he could have been rubberstamping we could have been rubberstamping you could have been rubberstamping they could have been rubberstamping

Negation

Simple form	V-ing form
I could not rubberstamp you could not rubberstamp he could not rubberstamp we could not rubberstamp you could not rubberstamp they could not rubberstamp	I could not be rubberstamping you could not be rubberstamping he could not be rubberstamping we could not be rubberstamping you could not be rubberstamping they could not be rubberstamping
Perfect	V-ing perfect
I could not have rubberstamped you could not have rubberstamped he could not have rubberstamped we could not have rubberstamped you could not have rubberstamped they could not have rubberstamped	I could not have been rubberstamping you could not have been rubberstamping he could not have been rubberstamping we could not have been rubberstamping you could not have been rubberstamping they could not have been rubberstamping

Interrogative form

Simple form	V-ing form
could I rubberstamp? could you rubberstamp? could he rubberstamp? could we rubberstamp? could you rubberstamp? could they rubberstamp?	could I be rubberstamping? could you be rubberstamping? could he be rubberstamping? could we be rubberstamping? could you be rubberstamping? could they be rubberstamping?
Perfect	V-ing perfect
could I have rubberstamped? could you have rubberstamped? could he have rubberstamped? could we have rubberstamped? could you have rubberstamped? could they have rubberstamped?	could I have been rubberstamping? could you have been rubberstamping? could he have been rubberstamping? could we have been rubberstamping? could you have been rubberstamping? could they have been rubberstamping?

Interro-negative form

Simple form	V-ing form
could I not rubberstamp? could you not rubberstamp? could he not rubberstamp? could we not rubberstamp? could you not rubberstamp? could they not rubberstamp?	could I not be rubberstamping? could you not be rubberstamping? could he not be rubberstamping? could we not be rubberstamping? could you not be rubberstamping? could they not be rubberstamping?
Perfect	V-ing perfect
could I not have rubberstamped? could you not have rubberstamped? could he not have rubberstamped? could we not have rubberstamped? could you not have rubberstamped? could they not have rubberstamped?	could I not have been rubberstamping? could you not have been rubberstamping? could he not have been rubberstamping? could we not have been rubberstamping? could you not have been rubberstamping? could they not have been rubberstamping?