Heisenberg

Nom propi

  had

Auxiliar

  been

Auxiliar

  studying

Verb

  the

Determinador

  papers

substantiu

  of

Adposició

  Paul

Nom propi

  Dirac

Nom propi

  and

Conjunció coordinadora

  Pascual

Nom propi

  Jordan

Nom propi

.

Heisenberg had been studying the papers of Paul Dirac and Pascual Jordan.

Heisenberg had been studying the papers of Paul Dirac and Pascual Jordan.