C12121212311232322331313232233132333132313133313113313233313231313221   >>    C1212121231123232233131323223313233313231313331311331323331323131322   <<    C12121212311232322331313232233132333132313133313113313233313231313223   >>      C12121212311232322331313232233132333132313133313113313233313231313222   >>