28 K1 ✘ K2 ✘ K3 ✓ 24 K1 ✘ K2 ✘ K3 ✘ 8 K1 ✘ K2 ✘ K3 ✘ 6 K1 ✘ K2 ✓ K3 ✓ 0 K1 ✘ K2 ✘ K3 ✘ 4 K1 ✘ K2 ✘ K3 ✓ 22 K1 ✘ K2 ✓ K3 ✓ 16 K1 ✘ K2 ✘ K3 ✘ 20 K1 ✘ K2 ✘ K3 ✓ 18 K1 ✘ K2 ✓ K3 ✘ 2 K1 ✘ K2 ✓ K3 ✘ 10 K1 ✘ K2 ✓ K3 ✘ 12 K1 ✘ K2 ✘ K3 ✓ 14 K1 ✘ K2 ✓ K3 ✓ 26 K1 ✘ K2 ✓ K3 ✘ 30 K1 ✘ K2 ✓ K3 ✓ K3's open K3's close turn off Inverters switch to island mode turn on inverters turn off Inverters K3 opens open K2 turn off inverters open K2 open K2 K3 opens open K2 turn off inverters turn off inverters