With 2of12ing and 8-letter word required:
Reading ...
   length 8: 12687
   length 7: 11571
   length 6: 8303
   length 5: 5122
   length 4: 2546
   length 3: 642
   length 2: 62
Preparing ...
Prepared 11926
Sorting ...
   346 aeinprst painters
   344 aeilprst pilaster
   332 adeiprst rapidest
   328 aeimprst primates
   319 adeilrst lardiest
   316 adeoprst adopters
   314 aeilnpst panelist
   313 adeinrst randiest
   313 aeloprst polestar
   312 aeilnrst entrails
   310 adeimrst readmits
   307 aeimnrst minarets
   304 aceiprst practise
   299 aelmprst tramples
   297 acelprst spectral
   296 aeginrst angriest
   295 acenorst ancestor
   293 aelprsty psaltery
   291 adeilmst medalist
   289 adeilprs lipreads
346 aeinprst
8 painters pantries pertains
7 antsier entraps nastier painter paniers panties parents parties pastern
6 arisen aspire astern entrap esprit insert instep inters niters nitres paints
5 anise antes antis apter arise aspen aster astir earns inapt inept inert inset
4 airs ante anti ants apes apse ares arts earn ears east eats eras erst etas
3 air ani ant ape apt are art asp ate ear eat ens era eta ins ire its nae nap
2 an as at en in is it pa pi re