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]==12 then
turtle.select(12)
elseif a[x][y][z]==13 then
turtle.select(13)
elseif a[x][y][z]==14 then
turtle.select(14)
elseif a[x][y][z]==0 then
turtle.select(16)
end
end

a = {{{0,0,0,0,0,0,0},
{1,0,0,0,0,0,1},
{1,0,0,0,0,0,1},
{1,0,0,0,0,0,1},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {1,0,0,0,0,0,1},
 {1,0,0,0,0,0,1},
 {1,0,0,0,0,0,1},
 {0,0,0,0,0,0,0}},

{{0,0,0,0,0,0,0},
 {1,0,0,2,0,0,1},
 {1,2,2,2,2,2,1},
 {1,0,0,2,0,0,1},
 {0,0,0,2,0,0,0},
 {1,0,0,2,0,0,0},
 {0,0,0,2,0,0,0},
 {0,0,0,2,0,0,0},
 {0,0,0,2,0,0,0},
 {0,0,0,2,0,0,0},
 {0,0,0,2,0,0,0},
 {1,0,0,2,0,0,1},
 {1,2,2,2,2,2,1},
 {1,0,0,2,0,0,1},
 {0,0,0,0,0,0,0}},

{{4,4,4,4,4,4,4},
 {1,4,4,4,4,4,1},
 {1,4,4,4,4,4,1},
 {1,4,4,4,4,4,1},
 {4,4,4,4,4,4,4},
 {5,4,4,4,4,4,5},
 {5,4,4,4,4,4,5},
 {5,4,4,4,4,4,5},
 {5,4,4,4,4,4,5},
 {5,4,4,4,4,4,5},
 {1,4,4,4,12,12,1},
 {1,12,12,12,12,12,1},
 {1,12,12,12,12,12,1},
 {12,12,12,12,12,12,12}},

{{6,6,7,7,7,6,6},
 {12,12,12,12,12,12,12},
 {12,12,12,12,12,12,12},
 {12,12,12,12,12,12,12},
 {5,0,0,0,0,0,5},
 {0,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,12,12,12,12,12,5},
 {5,12,12,12,12,12,5},
 {5,12,12,12,12,12,5},
 {5,12,12,12,12,12,5},
 {12,12,12,12,13,13,13},
 {13,13,13,13,13,13,13},
 {13,13,13,13,13,13,13},
 {8,8,13,13,13,8,8}},

{{5,5,5,5,5,5,5},
 {5,5,5,5,5,5,5},
 {5,5,5,5,5,5,5},
 {5,5,5,5,5,5,5},
 {5,5,1,5,5,5,5},
 {5,0,0,0,0,0,5},
 {0,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,10,10,10,10,10,5},
 {5,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,0,0,0,0,0,5},
 {5,5,5,5,5,14,14}},

{{0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {14,11,11,11,11,11,14},
 {11,0,0,0,0,0,11},
 {11,0,0,0,0,0,11},
 {11,0,0,0,0,0,11},
 {14,10,10,10,10,10,14},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {1,0,0,0,0,0,1},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0}},

{{0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0}, 
 {14,11,11,11,11,11,14},
 {11,0,0,0,0,0,11},
 {11,0,0,0,0,0,11},
 {14,10,10,10,10,10,14},
 {0,0,0,0,0,0,0},
 {1,0,0,0,0,0,1},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0}},

{{0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {14,11,11,11,11,11,14},
 {11,0,0,0,0,0,11},
 {14,10,10,10,10,10,14},
 {1,0,0,0,0,0,1},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0}},

{{0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {14,14,14,14,14,14,14},
 {14,14,14,14,14,14,14},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0}}}

turtle.up()
 
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