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]==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},
  {1,0,0,0,0,0,1},
  {2,3,3,3,3,3,3},
  {1,0,0,3,0,0,1},
  {0,0,0,3,0,0,0},
  {1,0,0,3,0,0,0},
  {0,0,0,3,0,0,0},
  {0,0,0,3,0,0,0},
  {0,0,0,3,0,0,0},
  {0,0,0,3,0,0,0},
  {0,0,0,3,0,0,0},
  {1,0,0,3,0,0,1},
  {2,3,3,3,3,3,2},
  {1,0,0,0,0,0,1},
  {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},
          {4,4,4,4,4,4,4},
          {1,4,4,4,11,11,1},
          {1,11,11,11,11,11,1},
          {1,11,11,11,11,11,1},
          {11,11,11,11,11,11,11}}, 

{{6,6,7,7,7,6,6},
          {11,11,11,11,11,11,11},
          {11,11,11,11,11,11,11},
          {11,11,11,11,11,11,11},
          {5,0,0,0,0,0,5},
          {0,0,0,0,0,0,5},
          {5,0,0,0,0,0,5},
          {5,11,11,11,11,11,5},
          {5,11,11,11,11,11,5},
          {5,11,11,11,11,11,5},
          {5,11,11,11,11,11,5},
          {11,11,11,11,12,12,12},
          {12,12,12,12,12,12,12},
          {12,12,12,12,12,12,12},
          {8,8,12,12,12,8,8}},

{{5,5,5,5,5,5,5},
          {5,5,5,5,5,5,5},
          {5,5,5,5,5,5,5},
          {5,5,1,5,5,5,5},
          {5,0,0,0,0,0,5},
          {0,0,0,0,0,0,5},
          {5,0,0,0,0,0,5},
          {5,9,9,9,9,9,5},
          {5,0,0,0,0,0,5},
          {5,0,0,0,0,0,5},
          {5,0,0,0,0,0,5},
          {5,0,0,0,0,0,13},
          {13,0,0,0,0,0,13},
          {13,0,0,0,0,0,13},
          {13,13,13,13,13,13,13}},

{{0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {0,0,0,0,0,0,0},
 {13,10,10,10,10,10,13},
 {10,0,0,0,0,0,10},
 {10,0,0,0,0,0,10},
 {10,0,0,0,0,0,10},
 {13,9,9,9,9,9,13},
 {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},
 {13,10,10,10,10,10,13},
 {10,0,0,0,0,0,10},
 {10,0,0,0,0,0,10},
 {13,9,9,9,9,9,13},
 {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},
 {13,10,10,10,10,10,13},
 {10,0,0,0,0,0,10},
 {13,9,9,9,9,9,13},
 {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},
 {13,13,13,13,13,13,13},
 {13,13,13,13,13,13,13},
 {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