23456 B M W H 54362 s s s 43265 s 2 23564 [- 36245 x 24365 -] - Repeat. Omit bracketed calls from one part. x = 18.
Either arrangement contains 18 each 56s and 65s. If the omission is made from the first part contains 56 little bell rollups, and if from the second part 45 little bell rollups.
Also true to Yorkshire, Lincolnshire, Swindon, Superlative and Pudsey.