function iff (x,y,z)
if a[x][y][z]==1 then
turtle.select(1)
elseif a[x][y][z]==2 then
turtle.select(2)
elseif a[x][y][z]==3 then
turtle.select(3)
elseif a[x][y][z]==4 then
turtle.select(4)
elseif a[x][y][z]==5 then
turtle.select(5)
elseif a[x][y][z]==6 then
turtle.select(6)
elseif a[x][y][z]==7 then
turtle.select(7)
elseif a[x][y][z]==8 then
turtle.select(8)
elseif a[x][y][z]==9 then
turtle.select(9)
elseif a[x][y][z]==10 then
turtle.select(10)
elseif a[x][y][z]==11 then
turtle.select(11)
elseif a[x][y][z]==0 then
turtle.select(16)
end
end

a = {{{1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,1},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2},
      {2,0,0,0,0,0,0,0,0,0,2,2,2,2,2,2,2,2,1},
      {2,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0},
      {2,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0},
      {2,0,0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0},
      {1,2,2,3,0,3,2,2,2,2,1,0,0,0,0,0,0,0,0}},

     {{1,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,1},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,4},
      {4,0,0,0,0,0,0,0,0,0,4,4,4,4,4,4,4,4,1},
      {4,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0},
      {4,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0},
      {4,0,0,0,0,0,0,0,0,0,4,0,0,0,0,0,0,0,0},
      {1,4,4,3,0,3,4,4,4,4,1,0,0,0,0,0,0,0,0}},

     {{1,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,1},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,5},
      {5,0,0,0,0,0,0,0,0,0,5,5,5,5,5,5,5,5,1},
      {5,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0},
      {5,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0},
      {5,0,0,0,0,0,0,0,0,0,5,0,0,0,0,0,0,0,0},
      {1,5,5,3,3,3,5,5,5,5,1,0,0,0,0,0,0,0,0}},

     {{1,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,1},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,6},
      {6,0,0,0,0,0,0,0,0,0,6,6,6,6,6,6,6,6,1},
      {6,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0},
      {6,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0},
      {6,0,0,0,0,0,0,0,0,0,6,0,0,0,0,0,0,0,0},
      {1,6,6,6,6,6,6,6,6,6,1,0,0,0,0,0,0,0,0}},

     {{1,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,1},
      {11,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,11},
      {11,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,11},
      {11,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,11},
      {11,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,11},
      {11,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,11},
      {11,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,11},
      {11,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,11},
      {11,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,11},
      {11,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,11},
      {11,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,11},
      {11,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,11},
      {11,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11},
      {11,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,1},
      {11,10,10,10,10,10,10,10,10,10,10,0,0,0,0,0,0,0,0},
      {11,10,10,10,10,10,10,10,10,11,11,0,0,0,0,0,0,0,0},
      {11,11,11,11,11,11,11,11,11,11,11,0,0,0,0,0,0,0,0},
      {1,11,11,11,11,11,11,11,11,11,1,0,0,0,0,0,0,0,0}}}


for x=1, #a do
  for y=1, #a[x] do
    for z=1, #a[x][y] do
      iff(x,y,z)
      turtle.placeDown()
      turtle.forward()
    end
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
    for y = 1,#a[x][y] do
     turtle.forward()
    end
    turtle.turnRight()
    turtle. turnRight()
   end
   turtle.turnLeft()
   for y = 1,#a[x] do
    turtle. forward()
   end
   turtle.turnRight()
   turtle.up()
  end