C2122121212121133131323331313113313233313231322331323221323123221   >>    C212212121212113313132333131311331323331323132233132322132312322   <<    C2122121212121133131323331313113313233313231322331323221323123223   >>      C2122121212121133131323331313113313233313231322331323221323123222   >>