City,Point1,Point2
Hamburg,A,B
Hamburg,A,H
Hamburg,B,H
Berlin,A,B
Berlin,A,H
Berlin,H,I
Koeln,A,B
Koeln,A,C
Koeln,A,H
Koeln,B,C
Koeln,B,H
Koeln,B,I
Koeln,C,H
Koeln,C,I
Koeln,D,E
Koeln,D,I
Koeln,D,J
Koeln,E,F
Koeln,E,I
Koeln,F,G
Koeln,F,I
Koeln,G,I
Koeln,H,I