A digram is a gram with two lines, each of which can be either broken (0) or full (1).
The digrams are the first grams we can build with monograms.
Binary name: 00 - 01 - 11 - 10
Name used: earth - fire - air - water
Meaning: yin of yin - yang of yin - yang of yang - yang of yin
00 - 01 - 11 - 10
yin-yin - yin-yang - yang-yang - yang-yin
yin of yin - yang of yin - yang of yang - yang of yin
earth - fire - air - water
north - east - south - west (fire corresponds with east)
empty glass - half-full glass - full glass - half-empty glass
death - growth - life - decay
winter - spring - summer - autumn
There are many things we can map to, and the way we map (and the results we get) from here on depend greatly on what we chose as our basic duality.