( G) Doom
   ,  L  R    :   / Guns ABBAAAAA Berserk  BABAAAAA   BAAAAAAA    , A, B, A, B, B, B, B 
  () AABAAAAA 
 ( ) BBBAAAAA 
 Skip (    ) A, B, A, A, B, B, B, 
  BBAAAAAA 
   AABABBBB 
Warp 10  ABAABBAA 
Warp    ABAABBBA