D1212132333132233131323222313231323331323131333132233132313311231231   >>    D121213233313223313132322231323132333132313133313223313231331123123   <<    D1212132333132233131323222313231323331323131333132233132313311231233   >>      D1212132333132233131323222313231323331323131333132233132313311231232   >>