5040 Unnamed Double Triples Principle
Arranged Alexander E Holroyd
Method by Brian D Price

2 3 7  234567
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s s s  563742
s s    476253
s s    527346
s s s  342675
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6 part, omitting s half way and end

method = 3,&6.3.5.7.3.6.3.5.2.5.1.3.5.2.5 (3725614)
single = 23 for final 6