D12123313223313133112111133131312323132313231323221323221323132321   >>    D1212331322331313311211113313131232313231323132322132322132313232   <<    D12123313223313133112111133131312323132313231323221323221323132323   >>      D12123313223313133112111133131312323132313231323221323221323132322   >>