aaaa aaab aaar aaas aaba aabb aabt aaoo aara aaro aars aart aasa aass aast aata aatt abaa abab abar abas abat abb- abba abbb abbo abbr abbs abbt aboa abob aboo abor abos abot abra abro abrs abs- absa abss abta abts abza aoba aora aorb aors aort aoss arab arar aras arat arba arbs aroa arob aroo aror aros aroz arr- arra arro arrr arrs arrt ars- arsa arso arst arta arto artr arts artz arza arzo asaa asab asao asar asas asat asba asbo asob asor asos asot asra asro asrs assa asso assr asss asst asta astb asto astr asts at-t ataa atab atar atas atat atbs atob ator atos atot atoz atra atro atsb atst atta atto attr atts aza- azab azar azas azat azaz azo- azoo azor azos azot azra azza azzo baaa baar baas baat baaz baba babb babo babr babs baos bar- bara barb baro barr bars bart barz basa baso bass bast bata bato bats batt batz baza bazo bbas bbbb bbbs boab boar boas boat boaz boba bobb bobo bobs boob boor boos boot booz bor- bora boro borr bors bort borz bosa boso boss bost bota botb boto bots bott boza bozo brab brao bras brat braz broa brob broo bror bros brot broz brrr brrs brsb brsr brst brza bsaa bsas bsat bsos bsra bsts btaa btob btor btrt btss bttb bzzt bzzz oara oars oass oast oats obas obba obbo obor obos obot obra obro obsr obss obst obts ooaa ooba oooo ooos oora oort oosa oost ootb oots orab orao orar oras orat orba orbb orbo orbs oro- oror oros orot oroz orra orro orrs orsa orso orta orto orts orzo osar osas osat osba osoo osor osos osro ossa ossb osso osta ostr osts otar otas otbs oto- otoo otor otos otra otro otrs otsa otso otta otto otts ozar raab raas raat raaz raba rabb rabo rabs raob raos rara rarb raro rars rarz rasa raso rass rast rata rato rats ratt ratz raza razo razr razz rbbb rbbr rbbs rbss rbst roab roar roas roat rob- roba robb robo robs robt roob roor roos root rooz rora roro rort rosa roso ross rost rota roto rotr rots rott roza rozz rras rrat rrrr rsaa rsos rssa rsts rtas rtss rtts rzab s-os saab saar saas saat saaz saba sabb sabo sabr sabs sabz saor saos sara saro sarr sars sart sarz sasa saso sass sast sata satb sato satr sats satt satz saza sbaa sbar sbas sbbs sbor sbot sbsa sbst soar soas soat soaz soba sobo sobr sobs sobt soor soos soot sora sorb soro sorr sors sort sosa soso soss sost sota soto sots soz- soza sras sros srta srtr ssaa ssab ssao ssas ssat ssbr ssot ssra ssrs sssa sssb ssss ssta sstb ssts stab star stas stat stbs stoa stob stoo stor stos stot stra stro strs stss sttr stza szar szob szot szss taa- taar taas taat taba tabb tabo tabs taoa taor taos tara tarb taro tarr tars tart tasa tasb tasr tass tast tata tatb tato tatr tats tatt tatz taza tazo tazr tazz tbar tbas tbbs tbrb tbst tbta toab toas toat toba tobo tobs tobt tooa toor toos toot tora toro torr tors tort tosa tosb toso toss tost tota toto totr tots tott toza tozo traa trab trao tras trat traz troa troo tros trot trra trst trtr tsaa tsao tsar tsat tsob tsos tssa tssr tsst tsts ttab ttbb ttss tttt tzar tzzt z-ro zaar zaat zaba zabo zabr zara zarb zaro zarr zaza zbar zoar zoat zobo zoo- zoos zoot zora zorb zoro zors zort zoso zoss zota zots zott zotz zoza zozo zsss ztoa ztst zzzs zzzz