newmtl mat22
  Kd 0.62 0.62 0.62

newmtl mat17
  Kd 0.27 0.35 0.39

newmtl mat16
  Kd 0.47 0.56 0.61

newmtl mat24
  Ka 0.58 0.65 1.00
  Kd 0.92 0.95 0.94
  Ks 1 1 1
  illum 9
  Ns 300
  d 0.4
  Ni 1.5