D121213233313223313111323131323132333132333133313132321233132313221211   >>    D12121323331322331311132313132313233313233313331313232123313231322121   <<    D121213233313223313111323131323132333132333133313132321233132313221213   >>      D121213233313223313111323131323132333132333133313132321233132313221212   >>