D231123132333132233131323223313231323131323131333132313331323133313232222121   >>    D23112313233313223313132322331323132313132313133313231333132313331323222212   <<    D231123132333132233131323223313231323131323131333132313331323133313232222123   >>      D231123132333132233131323223313231323131323131333132313331323133313232222122   >>