6 exit: ( 9 0 c ) ( 29 0 z ) ( 29 20 q ) ( 9 20 e )
7 ( 0 20 e ) ( 0 10 d ) ( 0 0 c ) ;
9 beacon: ( 5 5 ) ( 14 5 ) ( 24 5 ) ( 24 9 ) ( 24 11 )
10 ( 24 15 ) ( 14 15 ) ( 5 15 ) ( 5 10 ) ( 14 10 ) ;
12 airport: ( 19 9 a ) ( 19 11 a ) ;
14 line: [ ( 1 1 ) ( 4 4 ) ]
19 [ ( 1 10 ) ( 13 10 ) ]
20 [ ( 15 10 ) ( 17 10 ) ]
22 [ ( 18 11 ) ( 18 11 ) ]
24 [ ( 20 11 ) ( 23 11 ) ]
25 [ ( 6 15 ) ( 13 15 ) ]
26 [ ( 15 15 ) ( 24 15 ) ]
28 [ ( 10 19 ) ( 13 16 ) ]
29 [ ( 28 19 ) ( 25 16 ) ]
33 [ ( 14 11 ) ( 14 14 ) ]
35 [ ( 24 10 ) ( 24 10 ) ]
36 [ ( 24 12 ) ( 24 14 ) ] ;