D3313111211331323133313331323331323133313233313232233133313223311231   >>    D331311121133132313331333132333132313331323331323223313331322331123   <<    D3313111211331323133313331323331323133313233313232233133313223311233   >>      D3313111211331323133313331323331323133313233313232233133313223311232   >>