BellBoard

 2314567890E  6  9  18  19 
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 4123657890E      (a)
 ----
 2134         -          2     
 2143            s   -        
 -------------------------     
 41236578E90  1s.2.6.15s.19s 
 ------     
 215364       -            |   
 213465       s  s   -     |A
 3142         -          2 |   
 -------------------------     
 4132658709E  2.6.13s.15s.19s
 2143              A         
 -------------------------     
 412365879E0  1s.6.13s.19s.22
 3142              A         
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(a) = 5.7.8.10.11.13.15.16 (20)

Repeat, calling 1.6.7s.10s.13s.15.16.19s.22s for (a).

Rounds with a bob.