There are at least seven words that can follow PARITIES.
Are you thinking of patristic?
If not, what does petrastic mean?
Neither petrastic nor patristic can follow. Both lose letters as well as adding them. Please continue from PARITIES.
mac (oh, Great Arbiter), does the fact that there's been an intervening post since I added "parities" mean that I'm no longer barred from adding the next word?