Arrange as wanted.So I thought I would try this and see what I got:
4 tries until first 2x 15 and
11,17,15,13,12,12
3 tries:
10,15,15,9,16,9
2 tries:
17,15,13,11,13,14
3 tries:
16,11,14,9,14,18
Interesting, Did Colville say, place in order or rearrange to suit?