D3313111211331323133313331323331323133313233313232233112331323211112121   >>    D331311121133132313331333132333132313331323331323223311233132321111212   <<    D3313111211331323133313331323331323133313233313232233112331323211112123   >>      D3313111211331323133313331323331323133313233313232233112331323211112122   >>