try

countForward = 1
countRight = 1

while countRight <= 11 do
    while countForward <=11 do
        if countForward % 2 == 1 then
            turtle.up()
        end

        turtle.select(2)
        turtle.placeUp()
        checkDig = true

        while checkDig do
            if turtle.getFuelLevel() == 0 then
                turtle.select(1)
                turtle.refuel(1)
            end
            turtle.digDown()
            turtle.suckDown()
            checkDig = turtle.down()
        end

        while checkDig ~= true do
            checkUp = turtle.up()
            if checkUp == true then
                checkDig = false
            else
                checkDig = true
            end
        end
        for i = 16,3,-1 do
            turtle.select(i)
            turtle.dropUp()
        end
        if countForward == 11 then
            for i=10,1,-1 do
                turtle.back()
            end
            countForward = 1
        end

        countForward = countForward + 1
    end
    turtle.turnRight()
    turtle.forward()
    turtle.turnLeft()
    countRight = countRight + 1
end