-ana aaaa aaab aaac aaan aaar aaba aabb aabc aaca aacb aacc aacn aaco aacr aana aaon aaoo aara aarc aaro abaa abab abac aban abar abax abb- abba abbb abbo abbr abca abcb abcc abcn abcr aboa abob abon aboo abor abox abra abrc abro acaa acab acac acan acar acba acca accc acco acoa acon acor acr- acra acrc acro acrr ana- anaa anab anac anan anao anar anax anba anbb anbo anca ancc anco anna annb anno ano- anoa anon anor anox anrc aoba aoca aonb aono aora aorb aorn arab arac aran arar arax arba arc- arca arco arna arno aroa arob aron aroo aror arr- arra arrc arro arrr axan axar axo- axoa axon axxo ba-x baaa baan baar baba babb babo babr bac- baca bacc bacn baco bana banc bann bano banr baon bar- bara barb barc barn baro barr barx bbbb bbox bbrc bcaa bcar bcbc bcca bccc bcor bcra bnoc bnor bnrr boab boac boan boar boba bobb bobo boca boco bona bonc bonn bono boob booc boon boor boox bor- bora born boro borr boxa brab brac bran brao brax brca brcb brna brno broa brob broc bron broo bror brox brrr c-bo caaa caab caac caan caba cabo cac- caca cacc caco cacr cana canc cann cano caor cara carb carc carn caro carr carx caxa cbac cbar cbax cbbc cbca cbcc cbcn cbcr cbna cbox cbrn cbxa ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc ccnr ccob ccoc ccra ccrc cnaa cnac cnbc cnco cnna cnrc cnrr coan coax coba cobb cobo coca coco con- cona conc conn cono coob coon cor- cora corb corc corn coro corr coxa crab crac cran crar crax crbc crca crcc crcr crna crob croc cron croo cror cxro cxxx naaa naab naac naan naar naba nabc nabo naca nacc naco nan- nana nanb nann nano naoc naor nara narc narn naro narr narx nbaa nbar nbbc nbbo nbca nbcc nbco ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncna ncnc ncoa ncoc ncor ncra ncrc nnnn noaa noac noba nobc nobo noco non- nona nonn nono nonx noo- noob noon nooo noor nor- nora norb norc norn noro norr noxa nrab nrca nrna nroc nron nrrc oara oban obba obbo obon obor obox obra obro ocab ocac ocan ocbc occa occc occn ocna ocon ocra ocro ocrr onab onan onar onc- onca onco onna onno onon onor onra ooaa ooba oocr oona oooo oora orab orac oran orao orar orba orbb orbo orca orco orna ornc orno oro- oron oror orra orro oxa- oxan oxna oxo- oxon oxox oxxo raab raan raba rabb rabo rac- raca racc raco rana ranc rann rano ranx raob raoc rara rarb raro raxa rbbb rbbr rcac rcbc rcbo rccb rccc rcnr rcon rnbr rnco roab roan roar rob- roba robb robo roca rocc roco rona ronc rono roob roon roor roox rora rorc roro roxa roxo rrna rrrr xaar xana xano xara xbar xbox xbra xcon xoan xobc xoca xoco xorn xoro xoxo xxxo xxxx