C12121212311232322331313232233132333132333132233132313231321123121   >>    C1212121231123232233131323223313233313233313223313231323132112312   <<    C12121212311232322331313232233132333132333132233132313231321123123   >>      C12121212311232322331313232233132333132333132233132313231321123122   >>