#4p1s0: # Already optimal matching forward
   (?:   a  (?: ble | n(?:ce|t) | te | l )
     |   e  (?: ment | n(?:ce|t) | r )
     |   i  (?: ble | sm | ti | ve | ze | c )
     |   ment
     |   ous?
   )
#4p0s1r: # No performance gains matching in reverse
   (?:   (?: elb | (?:ec|t)n | et | l )  a
     |   (?: tnem | (?:ec|t)n | r )  e
     |   (?: elb | ms | it | ev | ez | c )  i
     |   tnem
     |   s?uo
   )
#4p1s0r: # Likewise this is not an optimal match, although:
   (?:   ci
     |   e  (?: cn[ae] | lb[ai] | ta | vi | zi )
     |   iti
     |   la
     |   msi
     |   re
     |   suo   
     |   tn  (?: eme? | [ae] )
     |   uo
   )
#4p0s1: # It's better than this:
   (?:ic|(?:[ae]nc|[ai]bl|at|iv|iz)e|iti|al|ism|er|ous|(?:e?me|[ae])nt|ou)