D1212132333132233131323222313231323221323132322331313331323221121   >>    D121213233313223313132322231323132322132313232233131333132322112   <<    D1212132333132233131323222313231323221323132322331313331323221123   >>      D1212132333132233131323222313231323221323132322331313331323221122   >>