How is 8 rakat Tahajjud prayed in Hanafi fiqh?

There are many videos in youtube and articles in the Net about Tahajjud salah in Hanafi fiqh and they make different confusing statements. Here are some of them: > In Hanafi fiqh Tajahhud is 8 rakats > > In Hanafi fiqh Tajahhud is 8 rakats by 2 > > In Hanafi fiqh Tajahhud is 8 rakats by 2 with one Salam > > In Hanafi fiqh Tajahhud is 8 rakats with one Salam And I understand them like this (in 3 ways), **1st WAY** [Beginning of Salah] - Niyyah (for 8 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda 3 Tasmiyah, Fatiha, Sura, Ruku', Sajda 4 Tasmiyah, Fatiha, Sura, Ruku', Sajda 5 Tasmiyah, Fatiha, Sura, Ruku', Sajda 6 Tasmiyah, Fatiha, Sura, Ruku', Sajda 7 Tasmiyah, Fatiha, Sura, Ruku', Sajda 8 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] **2nd WAY** [Beginning of Salah] - Niyyah (for 8 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud 3 Tasmiyah, Fatiha, Sura, Ruku', Sajda 4 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud 5 Tasmiyah, Fatiha, Sura, Ruku', Sajda 6 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud 7 Tasmiyah, Fatiha, Sura, Ruku', Sajda 8 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] **3rd WAY** [Beginning of Salah] - Niyyah (for 2 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] [Beginning of Salah] - Niyyah (for 2 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] [Beginning of Salah] - Niyyah (for 2 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] [Beginning of Salah] - Niyyah (for 2 rakats), Takbeer, Sana, Ta-'awwuz 1 Tasmiyah, Fatiha, Sura, Ruku', Sajda 2 Tasmiyah, Fatiha, Sura, Ruku', Sajda - Tashahhud - Salawat, Dua, Salam [End of Salah] **Which way is correct in Hanafi fiqh?**