السَّلامُ عَلَيْكُمْ
السَّلامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ
السَّلامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ
السَّلامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ
السَّلامُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُهُ
Translation 
A man came to the Prophet (may the peace and blessings of Allah be upon him) and said: "As-Salamu 'Alaikum (may you be safe from evil). The messenger of Allah (may the peace and blessings of Allah be upon him) responded to his greeting and the man sat down. The Prophet (may the peace and blessings of Allah be upon him) said, "Ten (meaning the man had earned the merit of ten good acts)."
Another one came and said: "As-Salamu 'Alaikum wa Rahmatullah (may you be safe from evil, and Mercy of Allah be upon you)." Messenger of Allah (may the peace and blessings of Allah be upon him) responded to his greeting and the man sat down. The messenger of Allah (may the peace and blessings of Allah be upon him) said, "Twenty."
A third one came and said: "As-Salamu 'Alaikum wa Rahmatullahi wa Barakatuhu (may you be safe from evil, and the Mercy of Allah and His Blessings be upon you)." The messenger of Allah (may the peace and blessings of Allah be upon him) responded to his greeting and the man sat down. The messenger of Allah (may the peace and blessings of Allah be upon him) said, "Thirty."
Another one came and said: "As-Salamu 'Alaikum wa Rahmatullah (may you be safe from evil, and Mercy of Allah be upon you)." Messenger of Allah (may the peace and blessings of Allah be upon him) responded to his greeting and the man sat down. The messenger of Allah (may the peace and blessings of Allah be upon him) said, "Twenty."
A third one came and said: "As-Salamu 'Alaikum wa Rahmatullahi wa Barakatuhu (may you be safe from evil, and the Mercy of Allah and His Blessings be upon you)." The messenger of Allah (may the peace and blessings of Allah be upon him) responded to his greeting and the man sat down. The messenger of Allah (may the peace and blessings of Allah be upon him) said, "Thirty."
Transliteration
assalaamu ‛alaykum
assalaamu ‛alaykum wa raḥmatullaah
assalaamu ‛alaykum wa raḥmatullaahi wa barakaatuh
assalaamu ‛alaykum wa raḥmatullaah
assalaamu ‛alaykum wa raḥmatullaahi wa barakaatuh
