Two to Go allowing all but Anya to escape. Willow subdues Buffy, then disables Anya and negates her protection spells. As she declares her victory, she is struck down by a bolt of energy from the just-arrived Rupert Giles. Two to Go "Two to Go" is the 21st episode of season 6 of the television show "Buffy the Vampire Slayer". The name of the episode is a reference to the previous one, which ends with Willow saying "One down" after killing Warren. Despite the death of Tara Maclay, she remains in brief scenes that are part of the opening credits. This episode, and
Square-free word first difference of the Thue–Morse sequence. That is, from the Thue–Morse sequence one forms a new sequence in which each term is the difference of two consecutive terms of the Thue–Morse sequence. The resulting square-free word is Another example found by John Leech is defined recursively over the alphabet {"a, b, c"}. Let formula_1 be any word starting with the letter "a". Define the words formula_2 recursively as follows: the word formula_3 is obtained from formula_4 by replacing each "a" in formula_4 with , each "b" with , and each "c" with . It is possible to check that the