newmtl mat21
  Kd 1.00 1.00 1.00

newmtl mat13
  Kd 1.00 0.60 0.00

newmtl mat23
  Kd 0.10 0.10 0.10

newmtl mat4
  Kd 0.00 0.74 0.83

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

newmtl mat25
  Ka 1.00 0.65 0.67
  Kd 0.92 0.95 0.94
  Ks 1 1 1
  illum 9
  Ns 300
  d 0.4
  Ni 1.5