D1121323223313223313112132313231323123231323223313233313331323231121   >>    D112132322331322331311213231323132312323132322331323331333132323112   <<    D1121323223313223313112132313231323123231323223313233313331323231123   >>      D1121323223313223313112132313231323123231323223313233313331323231122   >>