This python script takes a string of all related kewords and returns a non repeating keyword string to clipboard.

amzn-keywords.py

from os import system

system("cls")

flag = True

while flag:
    string = input("Enter the words: ").split()
    system("cls")
    if not string:
        flag = False
        print("Thank You for our services...!")
        exit()
    new_str = []
    for word in string:
        word = word.strip()
        if word not in new_str:
            # print(word)
            new_str.append(word)

    keywords = " ".join(new_str)
    print("\n", keywords, end="\n\n")
    system(f"echo {keywords} | clip")
    print("------------ Copied to clipboard ------------", end="\n\n")