Freepik
    DDNNDD²DN DNND 12DµNDºD D 12D ND 34D 12Dµ D 34NDµD 12D 12DN… DDNNNDµD²

    DDNNDD²DN DNND 12DµNDºD D 12D ND 34D 12Dµ D 34NDµD 12D 12DN… DDNNNDµD²