D1121323223313223313112132313231323132312323223313233313121123311   >>    D112132322331322331311213231323132313231232322331323331312112331   <<    D1121323223313223313112132313231323132312323223313233313121123313   >>      D1121323223313223313112132313231323132312323223313233313121123312   >>