D12121111112223313223313132233132213231323132313131133132223131   >>    D1212111111222331322331313223313221323132313231313113313222313   <<    D12121111112223313223313132233132213231323132313131133132223133   >>      D12121111112223313223313132233132213231323132313131133132223132   >>