C12121212311232322331313232233132333132333132233131323132313331221   >>    C1212121231123232233131323223313233313233313223313132313231333122   <<    C12121212311232322331313232233132333132333132233131323132313331223   >>      C12121212311232322331313232233132333132333132233131323132313331222   >>