drill

function drill()
turtle.dig()
turtle.digUp()
turtle.digDown()
if turtle.forward()==false then
turtle.dig()
turtle.dig()
turtle.dig()
end
end

function sideTunnel()
turtle.turnRight()
digTwo()
turtle.turnLeft()
turtle.turnLeft()
digTwo()
turtle.turnRight()
end

function digTwo()
turtle.dig()
turtle.digDown()
turtle.down()
turtle.dig()
turtle.up()
end

for i=0,20,1 do

if i==1 then
sideTunnel()
end

drill()

if i==10 then
i=0
end
end