-ana aaaa aaac aaan aaar aaca aacc aacn aaco aacr aana aaon aaoo aara aarc aaro acaa acac acan acar acca accc acco acoa acon acor acr- acra acrc acro acrr ana- anaa anac anan anao anar anca ancc anco anna anno ano- anoa anon anor anrc aoca aono aora aorn arac aran arar arc- arca arco arna arno aroa aron aroo aror arr- arra arrc arro arrr caaa caac caan cac- caca cacc caco cacr cana canc cann cano caor cara carc carn caro carr ccaa ccac ccar ccca cccc ccna ccnc ccnr ccoc ccra ccrc cnaa cnac cnco cnna cnrc cnrr coan coca coco con- cona conc conn cono coon cor- cora corc corn coro corr crac cran crar crca crcc crcr crna croc cron croo cror naaa naac naan naar naca nacc naco nan- nana nann nano naoc naor nara narc narn naro narr ncaa ncac ncar ncca nccc nccn nccr ncna ncnc ncoa ncoc ncor ncra ncrc nnnn noaa noac noco non- nona nonn nono noo- noon nooo noor nor- nora norc norn noro norr nrca nrna nroc nron nrrc oara ocac ocan occa occc occn ocna ocon ocra ocro ocrr onan onar onc- onca onco onna onno onon onor onra ooaa oocr oona oooo oora orac oran orao orar orca orco orna ornc orno oro- oron oror orra orro raan rac- raca racc raco rana ranc rann rano raoc rara raro rcac rccc rcnr rcon rnco roan roar roca rocc roco rona ronc rono roon roor rora rorc roro rrna rrrr