| There are unconnected nodes [19, 20] |
| Parkings start_1(2) & start_3(0) intersect |
| Parkings start_1(7) & start_8(0) intersect |
| Parkings start_3(4) & start_5(2) intersect |
| Parkings start_5(5) & start_6(4) intersect |
| Parkings start_9(9) & start_10(8) intersect |
| Parkings start_11(11) & start_12(10) intersect |