Incidence matrix according to Dynkin symbol

vov3ofx&#xt   → height(1,2) = ...
                height(2,3) = ...
(v3o || pseudo o3f || v3x)

o..3o..     | 3 * * | 2 2 0 0 0 | 1 2 1 0 0
.o.3.o.     | * 3 * | 0 2 2 0 0 | 0 1 2 1 0
..o3..o     | * * 6 | 0 0 1 1 1 | 0 0 1 1 1
------------+-------+-----------+----------
v.. ...     | 2 0 0 | 3 * * * * | 1 1 0 0 0
oo.3oo.&#x  | 1 1 0 | * 6 * * * | 0 1 1 0 0
.oo3.oo&#x  | 0 1 1 | * * 6 * * | 0 0 1 1 0
..v ...     | 0 0 2 | * * * 3 * | 0 0 0 1 1
... ..x     | 0 0 2 | * * * * 3 | 0 0 1 0 1
------------+-------+-----------+----------
v..3o..     | 3 0 0 | 3 0 0 0 0 | 1 * * * *
vo. ...&#x  | 2 1 0 | 1 2 0 0 0 | * 3 * * *
... ofx&#xt | 1 2 2 | 0 2 2 0 1 | * * 3 * *
.ov ...&#x  | 0 1 2 | 0 0 2 1 0 | * * * 3 *
..v3..x     | 0 0 6 | 0 0 0 3 3 | * * * * 1