},
      { key: 'Eta2', next: 'Theta2', color: 'goldenrod' },
      { key: 'Theta2', next: 'Iota2', color: 'orange' },
      { key: 'Iota2', next: 'Kappa2', color: 'coral' },
      { key: 'Kappa2', next: 'Lambda2', color: 'tomato' },
      { key: 'Lambda2', next: 'Mu2', color: 'goldenrod' },
      { key: 'Mu2', next: 'Nu2', color: 'orange' },
      { key: 'Nu2', next: 'Xi2', color: 'coral' },
      { key: 'Xi2', next: 'Omicron2', color: 'tomato' },
      { key: 'Omicron2', next: 'Pi2', color: 'goldenrod' },