D1121323223313223313112132313231323132312323223313233313331323211231231211   >>    D112132322331322331311213231323132313231232322331323331333132321123123121   <<    D1121323223313223313112132313231323132312323223313233313331323211231231213   >>      D1121323223313223313112132313231323132312323223313233313331323211231231212   >>