a------------------------------------------------
b---3--1--0------------0------01-----0-----------
c-----------2--0--2------0--2----2-----2--0-----0
d--------------------------------------------4---
e------------------------------------------------
f------------------------------------------------
a---------------------------------------------------------------
b---3--1--0------------0------01-----0--------------------------
c-----------2--0--2------0--2----2----2--0---0---0--1---0--1--3-
d------------------------------------------4---2------2---------2
e----------------------------------------------------------------
f---------------------------------------------------------------
a----------0--2--3--2--0---------------------0-0-0-0-----------
b-0--2--3------------------3--3-1-0-------0-----------3-1-0----
c-----------------------------------2-0-2---0----------------2-0
d--------------------------------------------------------------
e--------------------------------------------------------------
f--------------------------------------------------------------