1 Cor 12:28 cut extra sentences, "Those are the gifts God gave you, gifts of people who are members of the the local church. God gave them to you." These are good thoughts, but serve as application that is only implied in the text.
1 Cor 12:9 cut sentence at end of verse for the same reason as in verse 8. "The Spirit gives a variety of gifts, but he is still the same Spirit of God."
1 Cor 12:8 cut last sentence of verse, "These different gifts come through the work of the same Spirit in each one who believes in Christ." because it is not in the text at all.