past tense of de-dupe is de-duped.
|Simple / Indefinite Present Tense
|He/She/It de-dupes .
|Present Continuous Tense
|He/She/It is de-duping.
|I am de-duping.
|You/We/They are de-duping.
|Present Perfect Tense
|He/She/It has de-duped.
|I have de-duped.
|You/We/They have de-duped.
|Present Perfect Continuous Tense
|He/She/It has been de-duping.
|I have been de-duping.
|You/We/They have been de-duping.
|Simple Past Tense
|Past Continuous Tense
|He/She/It was de-duping.
|I was de-duping.
|You/We/They were de-duping.
|Past Perfect Tense
|He/She/It had de-duped.
|I had de-duped.
|You/We/They had de-duped.
|Past Perfect Continuous Tense
|He/She/It had been de-duping.
|I had been de-duping.
|You/We/They had been de-duping.
|Simple Future Tense
|He/She/It will/shall de-dupe.
|I will/shall de-dupe.
|You/We/They will/shall de-dupe.
|Future Continuous Tense
|He/She/It will/shall be de-duping.
|I will/shall be de-duping.
|You/We/They will/shall be de-duping.
|Future Perfect Tense
|He/She/It will/shall have de-duped.
|I will/shall have de-duped.
|You/We/They will/shall have de-duped.
|Future Perfect Continuous Tense
|He/She/It will/shall have been de-duping.
|I will/shall have been de-duping.
|You/We/They will/shall have been de-duping.
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