D121212121213132313113313231123313231333132322112211232313231313221   >>    D12121212121313231311331323112331323133313232211221123231323131322   <<    D121212121213132313113313231123313231333132322112211232313231313223   >>      D121212121213132313113313231123313231333132322112211232313231313222   >>