20
alt20_0001 10
alt20_0002 20
alt20_0003 10
alt20_0004 20
alt20_0005 10
alt20_0006 20
alt20_0007 10
alt20_0008 20
alt20_0009 10
alt20_0010 20
alt20_0011 10
alt20_0012 20
alt20_0013 10
alt20_0014 20
alt20_0015 10
alt20_0016 20
alt20_0017 10
alt20_0018 20
alt20_0019 10
alt20_0020 20