Original: Central Station ( lower level ) ( Hauptbahnhof unten ) , where U1 and U2 branch into two different lines and Münchner Freiheit ( U3/U6 ) also have four tracks .
Simplified: The stations Hauptbahnhof ( Central Station ) ( U1/U2 ) and Münchner Freiheit ( U3/U6 ) have four tracks .