Mine

for i=1,5 do

for i=1,3 do
 turtle.dig()
 turtle.forward()
 turtle.digUp()
end

turtle.turnRight()

for i=1,7 do
 turtle.dig()
 turtle.forward()
 turtle.digUp()
end

turtle.turnLeft()
turtle.turnLeft()

for i=1,7 do
 turtle.forward()
end

for i=1,7 do
 turtle.dig()
 turtle.forward()
 turtle.digUp()
end

turtle.turnRight()
turtle.turnRight()

for i=1,7 do
 turtle.forward()
end

turtle.turnLeft()

end