cibd 10.0: Program for Constructing cyclic IBDs of size (v,k,r)
(c) 2018 Design Computing (http://designcomputing.net/)

Note: Best cyclic IBD for v=8, k=4, r=6, b=12

Try	iter	E	E/U	Concurrences
1	0	0.847	0.992	2(4) 3(2) 4(1) 

Initial block(s) and the no. of blocks generated by each initial block for try 1 using seed 1533472703328:

0	6	1	5	 (8)
0	2	4*	6*	 (4)

Plan (blocks are columns):

4	1	5	6	4	3	6	1	3	7	6	6	
7	0	4	2	3	2	1	4	5	1	4	2	
5	5	1	3	6	7	7	0	7	5	0	0	
0	6	2	5	7	0	2	3	1	3	2	4	

Note: cibd used 0.13 seconds.
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