| | Initials | Attractor types | Phase portraits |
| | (10−9, 0, 0, ±3.6) | Asymmetric chaotic double-scroll attractors | Figure 1(a) | | (10−9, 0, 0, ±3.3) | Period-2 limit cycles | Figure 1(b) | | (−1, 2, 0, 2.55) | Spiral chaotic attractor | Figure 1(c) (red) | | (10−9, 0, 0, 0) | Symmetric chaotic double-scroll attractor | Figure 1(c) (blue) | | (10−9, −1.5, 0, −2) | Period-2 limit cycle | Figure 1(d) (red) | | (10−9, 0, 0, −0.8) | Period-3 limit cycle | Figure 1(d) (blue) | | (−1, 0, 0, −3.4) | Period-1 limit cycle | Figure 1(e) (red) | | (−1, 0, 0, −3.2) | Point attractor | Figure 1(e) (blue) | | (−1, 2, 0, 2.2) | Unbounded orbit | Figure 1(f) |
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