BellBoard

(324165879)  1   5   6   15   16
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 325164          S                |
 314265             (a)           |
 1234                -   S    -   |
 1423                    -        | A
 435261              -   -        |
 534162          -            -   |
 315264          -   -   -        |
 324165             (a)           |
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 324165987   -       A
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 324165798   -       A
 -------------------------------
 324165978   S       A
 -------------------------------
 324165897   -       A
 -------------------------------
 324165789   -       A
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Round in five changes with a single at 1.

Start with rounds as the fifth change of a slow six.

(a) = s4-7.s10.12.14 (16)