D3321113231323133313133313223313221323331311331323133311221123121   >>    D332111323132313331313331322331322132333131133132313331122112312   <<    D3321113231323133313133313223313221323331311331323133311221123123   >>      D3321113231323133313133313223313221323331311331323133311221123122   >>