{
  sp_0005 => {
               count => {
                 A => 9,
                 C => 2,
                 ...,
                 W => 1,
                 Y => 5,
               },
               len => 110,
             },
  sp_0017 => {
               count => {
                 A => 10,
                 C => 2,
                 ...,
                 W => 5,
                 Y => 10,
               },
               len => 121,
             },
}