C212212121212113313132333131311331323331323132233132322331322121   >>    C21221212121211331313233313131133132333132313223313232233132212   <<    C212212121212113313132333131311331323331323132233132322331322123   >>      C212212121212113313132333131311331323331323132233132322331322122   >>