C2122121212121133131323331313113313233313231322331323132322132121121   >>    C212212121212113313132333131311331323331323132233132313232213212112   <<    C2122121212121133131323331313113313233313231322331323132322132121123   >>      C2122121212121133131323331313113313233313231322331323132322132121122   >>