(CommandList
  children: [
    (C {(echo)} {(line)} {(2)})
    (C {(echo)} {(line)} {(3)})
    (C {(echo)} {(line)} {(4)})
    (C {(echo)} {(line)} {(5)})
    (C {(echo)} {(line)} {(6)})
    (C {(echo)} {(line)} {(7)})
    (C {(echo)} {(line)} {(8)})
  ]
)