f0:
f0:
f0:
f0:
f0:
f1:	nil
f1:	a1/1
f1:	a1/2
f1:	a1/3
f1:	a1/4
f2:	nil	nil
f2:	a1/1	nil
f2:	a1/2	a2/2
f2:	a1/3	a2/3
f2:	a1/4	a2/4
f3:	nil	nil	nil
f3:	a1/1	nil	nil
f3:	a1/2	a2/2	nil
f3:	a1/3	a2/3	a3/3
f3:	a1/4	a2/4	a3/4
f4:	nil	nil	nil	nil
f4:	a1/1	nil	nil	nil
f4:	a1/2	a2/2	nil	nil
f4:	a1/3	a2/3	a3/3	nil
f4:	a1/4	a2/4	a3/4	a4/4
z0:	nil
z2:	c2.3/4
z4:	c4.1/4
g0:	nil	nil	nil	nil	(eol)
g2:	b2.3/4	b2.4/4	nil	nil	(eol)
g4:	b4.1/4	b4.2/4	b4.3/4	b4.4/4	(eol)
11	12	13
23	22	21
32	45	58
a	nil
...
...,a	nil	nil
a,...	nil
a	q
...
...,a	nil	q
a,...	q
a	q
...	r
...,a	r	q
a,...	q	r
a	q
...	r	s
...,a	r	q
a,...	q	r	s
third	abc	nil	|	nil	nil	nil
third	def	nil	|	nil	nil	nil
third	def	nil	|	nil	nil	nil
third	abc	p	|	p	nil	nil
third	def	nil	|	p	nil	nil
third	def	nil	|	p	nil	nil
third	abc	p	|	p	q	nil
third	def	q	|	p	q	nil
third	def	q	|	p	q	nil
third	abc	p	|	p	q	r
third	def	q	|	p	q	r
third	def	q	|	p	q	r
third	abc	p	|	p	q	r
third	def	q	|	p	q	r
third	def	q	|	p	q	r
third	abc	nil	|	nil	nil	nil
third	def	nil	|	nil	nil	nil
third	def	nil	|	nil	nil	nil