combining ideas with two-part conjunctions

Use a two-part conjunction to combine the following ideas: I want pizza or pasta. I want only one of them. I don't want both of them at the same time.

Use a two-part conjunction to combine the following ideas: I want pizza and pasta. I want both of them at the same time.

Use a two-part conjunction to combine the following ideas: I don't want pizza or pasta. I don't want them separately or at the same time.

Use a two-part conjunction to combine the following ideas: I want pizza and pasta. I want both of them at the same time. I wish to emphasize that I want them simultaneously.