from typing import List


def get_tags(version_number: str) -> List[str]:
    """Get comma separated tags for a version number"""
    if "alpha" in version_number:
        tag = "latest-alpha"
    elif "beta" in version_number:
        tag = "latest-beta"
    elif version_number.startswith("1."):
        tag = "latest-legacy"
    else:
        tag = "latest"

    return [tag, version_number]