byang lho

To continue with our directions, byang is north, and lho is south.

To give an example of telegram-style Tibetan, let's say a text that tells that various colors of light arrive from certain directions, it would look something like:

lho ser, in south yellow.

byang ljang, in north green.

shar dkar, in east white.

nub dmar, in west red.

Note that in many texts the expression are ten directions, this means that there are the four cardinal directions, the other four intermediate (ordinal) directions, north-east and so on. And in addition, there's above and below. So that should cover the space.