a-a a-b a-t a-z aaa aab aao aar aas aat aav aaz ab- aba abb abo abr abs abt abv abz aoa aob aoo aor aos aot aov ar- ara arb aro arr ars art arv arz as- asa asb aso asr ass ast asv asz at- ata atb ato atr ats att atv atz av- ava avb avo avr avs avt avz az- aza azb azo azs azt azz baa bab bao bar bas bat bav baz bba bbb bbo bbr bbs bbt boa bob boo bor bos bot bov boz bra brb bro brr brs brt brv brz bsa bsb bso bsr bss bst bsv bta btb bto btr bts btt btv btz bva bvb bvo bvr bvs bvt bvv bza bzo bzr bzs bzz oaa oab oao oar oas oat oav ob- oba obb obo obr obs obt obv oo- ooa oob ooo oor oos oot oov or- ora orb oro orr ors ort orv orz os- osa osb oso osr oss ost osv ot- ota otb oto otr ots ott otv otz ov- ova ovb ovo ovs ovv oza ozo ozs ozt ozz ra- raa rab rao rar ras rat rav raz rba rbb rbo rbr rbs rbt roa rob roo ror ros rot rov roz rra rrb rrr rrs rrt rsa rsb rso rsr rss rst rsv rta rtb rto rtr rts rtt rtv rtz rva rvb rvo rvr rvs rvt rvv rza rzb rzo saa sab sao sar sas sat sav saz sba sbb sbo sbr sbs sbt sbv soa sob soo sor sos sot sov soz sr- sra srb sro srr srs srt srv ss- ssa ssb sso ssr sss sst ssv ssz sta stb sto str sts stt stv stz sva svb svo svr svs svt svv svz sza szr taa tab tao tar tas tat tav taz tba tbb tbo tbr tbs tbt tbv tbz to- toa tob too tor tos tot tov toz tra trb tro trr trs trt trv trz tsa tsb tso tsr tss tst tsv tta ttb tto ttr tts ttt ttv tva tvb tvo tvr tvs tvt tvz tza tzs v-a vaa vab vao var vas vat vav vaz vba vbo vbr vbs vbv vbz voa vob voo vor vos vot vov voz vra vrb vrr vrs vrt vsa vsb vso vsr vss vst vsv vta vtb vto vtr vts vtt vtv vtz vva vvb vvo vvr vvs vvt vvv vvz zaa zab zao zar zas zat zav zaz zbb zbr zbs zbt zbv zo- zoa zob zoo zor zos zot zro zrs zsa zst zsz zta ztr ztv zzr zzs zzt zzz

aaaa aaab aaar aaas aaav aaba aabb aabt aaoo aara aaro aars aart aasa aass aast aata aatt aava abaa abab abar abas abat abb- abba abbb abbo abbr abbs abbt aboa abob aboo abor abos abot abov abra abro abrs abs- absa abss abta abts abva 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 artv artz arva arvo 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 astv asva asvs at-t ataa atab atar atas atat atbs atob ator atos atot atoz atra atro atsb atst atta atto attr atts atvs avab avao avar avas avat avaz avor avos avot avra avro avst avva avvo aza- azab azar azas azat azaz azo- azoo azor azos azot azov azra azsv aztv 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 bava 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 bova bovo boza bozo brab brao bras brat brav braz broa brob broo bror bros brot broz brrr brrs brsb brsr brst brza bsaa bsas bsat bsos bsra bsts bstv btaa btob btor btrt btss bttb bzzt bzzz oara oars oass oast oats oavs obas obba obbo obor obos obot obra obro obsr obss obst obts obvs ooaa ooba oooo ooos oora oort oosa oost ootb oots orab orao orar oras orat orav orba orbb orbo orbs oro- oror oros orot oroz orra orro orrs orsa orso orta orto orts orvr orvs orzo osar osas osat osba osoo osor osos osov osro ossa ossb osso osta ostr osts otar otas otbs oto- otoo otor otos otov otra otro otrs otsa otso otta otto otts ovar ovo- ovoo ovot ovra 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 rava 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 rova rovo rovs roza rozz rras rrat rrrr rsaa rsos rssa rsts rtas rtss rtts rtva rzab rzav s-os s-vt saab saar saas saat saaz saba sabb sabo sabr sabs sabz saor saos sara saro sarr sars sart sarv sarz sasa saso sass sast sata satb sato satr sats satt satz sava savo savs 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 sosv sota soto sots sova sovo sovs soz- soza sras sros srta srtr srtv ssaa ssab ssao ssas ssat ssbr ssot ssra ssrs sssa sssb ssss ssta sstb ssts st-v stab star stas stat stbs stoa stob stoo stor stos stot stra stro strs stss sttr stvs stza svar svor svtr szar szob szot szss taa- taar