1<?xml version="1.0"?> 2<far-north> Level-1 3 <?a-pi pi-1?> 4 <north> 5 Level-3 6 <?b-pi pi-2?> 7 <near-north> 8 Level-4 9 <?a-pi pi-3?> 10 <center> 11 <?b-pi pi-4?> 12 <near-south-west/>Level-5 13 <?a-pi pi-5?> 14 <near-south>Level-6 15 <?b-pi pi-6?> 16 <south/> 17 <?a-pi pi-7?> 18 </near-south> 19 <?b-pi pi-8?> 20 </center> 21 </near-north> 22 <?a-pi pi-9?> 23 </north> 24</far-north> 25