Historical clue formulations

• Bodily partitions — 2026-01-31
• Philadelphia train system — 2024-01-04
• Places for some piercings — 2023-02-19
• Partitions between nostrils — 2022-06-26
• BART : San Francisco :: ___ : Philadelphia — 2022-06-24
• Dividing membranes — 2020-09-13
• Anatomical dividers — 2019-02-23
• San Francisco : BART :: Philadelphia : ___ — 2018-06-10
• Philadelphia train system — 2016-03-04
• Walls of the heart — 2012-04-14
• Dividers of 35-Down — 2010-01-16
• Dividing membranes — 2007-10-25
• Dividing membranes — 2005-07-06
• Nasal partitions — 2004-12-14
• Membranes — 2004-08-01
• Biological partitions — 2002-08-28
• Nasal dividers — 2002-06-19
• Anatomical dividers — 2001-03-16
• Dividing walls — 2000-12-30
• Nasal dividers — 2000-06-28
• Nasal partitions — 1998-11-17
• Nasal partitions — 1998-03-05
• Dividing membranes — 1997-11-12
• Nose parts — 1996-10-25
• Plant partitions — 1995-06-17