r4 vs r3
......
55
==== 1 ====
66
=== 1 ===
77
== 1 ==
8
= 1 =
9
= 1 =
810
== 1 ==
9
== 1 ==
1011
=== 1 ===
1112
==== 1 ====
1213
===== 1 =====
1314
====== 1 ======
14
======= 1 =======
15
= 2 =
1516
== 2 ==
1617
=== 2 ===
1718
==== 2 ====
1819
===== 2 =====
1920
====== 2 ======
20
======= 2 =======
21
======= 2 =======
2221
====== 2 ======
2322
===== 2 =====
2423
==== 2 ====
2524
=== 2 ===
2625
== 2 ==
26
= 2 =