ID_1 ID_2 missing
0 0 0
C00003 C00003 0
C00004 C00004 0
C00005 C00005 0
C00006 C00006 0
C00007 C00007 0
C00008 C00008 0
C00009 C00009 0
C00010 C00010 0
C00011 C00011 0
C00012 C00012 0
