D1121323223313223313112132313231323123231323223313233313331311211211311   >>    D112132322331322331311213231323132312323132322331323331333131121121131   <<    D1121323223313223313112132313231323123231323223313233313331311211211313   >>      D1121323223313223313112132313231323123231323223313233313331311211211312   >>