D3313123121113232223323132313232213231323132322331322331323211111   >>    D331312312111323222332313231323221323132313232233132233132321111   <<    D3313123121113232223323132313232213231323132322331322331323211113   >>      D3313123121113232223323132313232213231323132322331322331323211112   >>