Kedushah for One Who Prays Together with the Shaliach Tzibbur

Hello, Rabbi,
If a person is praying the Shemoneh Esreh together with the chazzan’s repetition, during Kedushah, which parts should he say by moving his lips? “We will sanctify Your Name”? Should he respond and say “Kadosh” three times? “And in Your holy words it is written, saying”? “From generation to generation we will proclaim Your greatness”?

Hello and blessings. 

He says everything that the shaliach tzibbur says. 

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