do_swaps: 0 .. 10
[1]b c d e f g h i j[a]2 3 4 5 6 7] 0 <=> 10
[1[2]c d e f g h i j a[b]3 4 5 6 7] 1 <=> 11
[1 2[3]d e f g h i j a b[c]4 5 6 7] 2 <=> 12
[1 2 3[4]e f g h i j a b c[d]5 6 7] 3 <=> 13
[1 2 3 4[5]f g h i j a b c d[e]6 7] 4 <=> 14
[1 2 3 4 5[6]g h i j a b c d e[f]7] 5 <=> 15
[1 2 3 4 5 6[7]h i j a b c d e f[g] 6 <=> 16 *
[1 2 3 4 5 6 7 a[i]j h[b]c d e f g] 7 <=> 10
[1 2 3 4 5 6 7 a b[j]h i[c]d e f g] 8 <=> 11
[1 2 3 4 5 6 7 a b c[h]i j[d]e f g] 9 <=> 12
do_swaps: 10 .. 13
[1 2 3 4 5 6 7 a b c d[i]j h[e]f g] 10 <=> 13
[1 2 3 4 5 6 7 a b c d e[j]h i[f]g] 11 <=> 14
[1 2 3 4 5 6 7 a b c d e f[h]i j[g] 12 <=> 15
do_swaps: 13 .. 16
[1 2 3 4 5 6 7 a b c d e f g[i]j[h] 13 <=> 16
[1 2 3 4 5 6 7 a b c d e f g h[j|i] 14 <=> 16
[1 2 3 4 5 6 7 a b c d e f g h i j] 15 <=> 16
do_swaps: 16 .. 17
16 swaps => 1 2 3 4 5 6 7 a b c d e f g h i j