C12121212311232322331313232233132333132333132233132313112222321   >>    C1212121231123232233131323223313233313233313223313231311222232   <<    C12121212311232322331313232233132333132333132233132313112222323   >>      C12121212311232322331313232233132333132333132233132313112222322   >>