D12121323331313223313233313131133132213232213231323132313231311   >>    D1212132333131322331323331313113313221323221323132313231323131   <<    D12121323331313223313233313131133132213232213231323132313231313   >>      D12121323331313223313233313131133132213232213231323132313231312   >>