insert into leg values('a','a0','a1');
insert into leg values('a','a1','a2');
insert into leg values('a','a2','a3');
insert into leg values('a','a3','a4');
insert into leg values('a','a4','a5');
insert into leg values('a','a5','a6');
insert into leg values('a','a6','a7');
insert into leg values('a','a7','a8');
insert into leg values('a','a8','a9');
insert into leg values('a','a9','a10');
insert into leg values('a','a10','a11');
insert into leg values('a','a11','a12');
insert into leg values('a','a12','a13');
insert into leg values('a','a13','a14');
insert into leg values('a','a14','a15');
insert into leg values('a','a15','a16');
insert into leg values('a','a16','a17');
insert into leg values('a','a17','a18');
insert into leg values('a','a18','a19');
insert into leg values('a','a19','downtown');
insert into leg values('a','downtown','a20');
insert into leg values('a','a20','a21');
insert into leg values('a','a21','a22');

insert into leg values('b','b0','b1');
insert into leg values('b','b1','b2');
insert into leg values('b','b2','b3');
insert into leg values('b','b3','b4');
insert into leg values('b','b4','b5');
insert into leg values('b','b5','b6');
insert into leg values('b','b6','b7');
insert into leg values('b','b7','b8');
insert into leg values('b','b8','b9');
insert into leg values('b','b9','b10');
insert into leg values('b','b10','b11');
insert into leg values('b','b11','b12');
insert into leg values('b','b12','b13');
insert into leg values('b','b13','b14');
insert into leg values('b','b14','b15');
insert into leg values('b','b15','b16');
insert into leg values('b','b16','b17');
insert into leg values('b','b17','b18');
insert into leg values('b','b18','b19');
insert into leg values('b','b19','downtown');
insert into leg values('b','downtown','b20');
insert into leg values('b','b20','b21');
insert into leg values('b','b21','b22');

insert into leg values('c','c0','c1');
insert into leg values('c','c1','c2');
insert into leg values('c','c2','c3');
insert into leg values('c','c3','c4');
insert into leg values('c','c4','c5');
insert into leg values('c','c5','c6');
insert into leg values('c','c6','c7');
insert into leg values('c','c7','c8');
insert into leg values('c','c8','c9');
insert into leg values('c','c9','c10');
insert into leg values('c','c10','c11');
insert into leg values('c','c11','c12');
insert into leg values('c','c12','c13');
insert into leg values('c','c13','c14');
insert into leg values('c','c14','c15');
insert into leg values('c','c15','c16');
insert into leg values('c','c16','c17');
insert into leg values('c','c17','c18');
insert into leg values('c','c18','c19');
insert into leg values('c','c19','downtown');
insert into leg values('c','downtown','c20');
insert into leg values('c','c20','c21');
insert into leg values('c','c21','c22');

insert into leg values('d','d0','d1');
insert into leg values('d','d1','d2');
insert into leg values('d','d2','d3');
insert into leg values('d','d3','d4');
insert into leg values('d','d4','d5');
insert into leg values('d','d5','d6');
insert into leg values('d','d6','d7');
insert into leg values('d','d7','d8');
insert into leg values('d','d8','d9');
insert into leg values('d','d9','d10');
insert into leg values('d','d10','d11');
insert into leg values('d','d11','d12');
insert into leg values('d','d12','d13');
insert into leg values('d','d13','d14');
insert into leg values('d','d14','d15');
insert into leg values('d','d15','d16');
insert into leg values('d','d16','d17');
insert into leg values('d','d17','d18');
insert into leg values('d','d18','d19');
insert into leg values('d','d19','downtown');
insert into leg values('d','downtown','d20');
insert into leg values('d','d20','d21');
insert into leg values('d','d21','d22');

insert into leg values('f','f0','f1');
insert into leg values('f','f1','f2');
insert into leg values('f','f2','f3');
insert into leg values('f','f3','f4');
insert into leg values('f','f4','f5');
insert into leg values('f','f5','f6');
insert into leg values('f','f6','f7');
insert into leg values('f','f7','f8');
insert into leg values('f','f8','f9');
insert into leg values('f','f9','f10');
insert into leg values('f','f10','f11');
insert into leg values('f','f11','f12');
insert into leg values('f','f12','f13');
insert into leg values('f','f13','f14');
insert into leg values('f','f14','f15');
insert into leg values('f','f15','f16');
insert into leg values('f','f16','f17');
insert into leg values('f','f17','f18');
insert into leg values('f','f18','f19');
insert into leg values('f','f19','downtown');
insert into leg values('f','downtown','f20');
insert into leg values('f','f20','f21');
insert into leg values('f','f21','f22');

insert into interchange values('downtown','a','f');
insert into interchange values('downtown','b','d');
