R’ Chaim Twerski Shlit”a holds like the Raavad (1, 3) and originally tied like the GR”A using all blue Chulyos, using the Chabad/Chassidishe Chulya. However, he has changed his mind and now tells people to tie like the GRA alternating blue and white. He follows R Yitzchok Brand’s Shitta. The general pattern for GR”A is 4-4-4-1. String ratio is unclear.