t/data/traits.tab

   1 "id"    "assoc" disp    "intermediate"
   2 0       "blue"  blue    "red"
   3 1       "blue"  blue    "red"
   4 2       "blue"          "blue"
   5 3       "blue"  blue    "blue"
   6 4       "blue"  red     "blue"
   7 5       "blue"  blue    "red"
   8 6       "blue"  red     "blue"
   9 7       "blue"  blue    "blue"
  10 8       "blue"  red     "blue"
  11 9       "red"   blue    "red"
  12 10      "red"   red     "red"
  13 11      "red"   blue    "blue"
  14 12      "red"   red     "blue"
  15 13      "red"   blue    "red"
  16 14      "red"   red     "red"
  17 15      "red"   blue    "red"
  18 16      "red"   red     "red"