D121213233313132233132333131313231333132333131323331323132211111   >>    D12121323331313223313233313131323133313233313132333132313221111   <<    D121213233313132233132333131313231333132333131323331323132211113   >>      D121213233313132233132333131313231333132333131323331323132211112   >>