tab

tab={}
x=1
y=0
while true do
x=1
term.clear()
while x<=13 do
term.setCursorPos(1,x)
term.write(tab[x+y])
x=x+1
end
event, key, isHeld = os.pullEvent("key")
if key==200 then y=y+1 end
if key==208 then y=y-1 end

end