7-19-31-43-55
Floor 6: 61
Floor 5: 52-60
Floor 4: 40-51
Floor 3: 31-39
Floor 2: 19-30
Floor 1: 7-18
Floor 0: 1-6
Floors 1 and 2 correspond to half numbers between primary sequence of 12+12+12 starting at 1. Last collage of series corr. to last number of 6 part sequence (61).
Wall space of floors shrinks starting at 3 and moving to 6, which contains only 1 long collage. 61 combines 4 separate parts of Whitehead Xing into 1.
Sunklands 