Here's a hint they are in The Communist Manifesto. I own a copy of it, do you?
Socialism is in the Communist Manifesto? That's some real bullshte artistry, right there. Congratulations.
No, it is not "some real bullshte artistry." In The Communist Manifesto
Marx lists 10 ways to turn a capitalist country into a socialist country. Then after being a socialist country it would become a communist country. Had you read The Communist Manifesto
you might have learned that. You don't need to own a copy of it to read it. You can get one at your local library.