C12121212311232322331313232233132333132333132233132313131232321   >>    C1212121231123232233131323223313233313233313223313231313123232   <<    C12121212311232322331313232233132333132333132233132313131232323   >>      C12121212311232322331313232233132333132333132233132313131232322   >>