
      { key: 'Pi2', next: 'Rho2', color: 'orange' },
      { key: 'Rho2', next: 'Sigma2', color: 'coral' },
      { key: 'Sigma2', next: 'Tau2', color: 'tomato' },
      { key: 'Tau2', next: 'Upsilon2', color: 'goldenrod' },
      { key: 'Upsilon2', next: 'Phi2', color: 'orange' },
      { key: 'Phi2', next: 'Chi2', color: 'coral' },
      { key: 'Chi2', next: 'Psi2', color: 'tomato' },
      { key: 'Psi2', next: 'Omega2', color: 'goldenrod' },
      { key: 'Omega2', color: 'orange' }
    ];
    myDiagram.