This looks like a squat, but all edge-sequences bearing double covers of azes.

Incidence matrix according to Dynkin symbol

x4o4/3o∞*a   (N,M → ∞)

. .   .    | NM |   8 |  4  4
-----------+----+-----+------
x .   .    |  2 | 4NM |  1  1
-----------+----+-----+------
x4o   .    |  4 |   4 | NM  *
x .   o∞*a ♦  M |   M |  * 4N

o4o4/3x∞*a   (N,M → ∞)

. .   .    | NM |   8 |  4  4
-----------+----+-----+------
. .   x    |  2 | 4NM |  1  1
-----------+----+-----+------
. o4/3x    |  4 |   4 | NM  *
o .   x∞*a ♦  M |   M |  * 4N

x4o4o∞'*a   (N,M → ∞)

. . .     | NM |   8 |  4  4
----------+----+-----+------
x . .     |  2 | 4NM |  1  1
----------+----+-----+------
x4o .     |  4 |   4 | NM  *
x . o∞'*a ♦  M |   M |  * 4N

x4/3o4/3o∞'*a   (N,M → ∞)

.   .   .     | NM |   8 |  4  4
--------------+----+-----+------
x   .   .     |  2 | 4NM |  1  1
--------------+----+-----+------
x4/3o   .     |  4 |   4 | NM  *
x   .   o∞'*a ♦  M |   M |  * 4N