a-a a-b a-t aaa aab aaf aak aao aas aat ab- aba abb abf abk abo abs abt af- afa afb aff afk afo afs aft aka akb akk ako aks aoa aob aof aok aoo aos aot as- asa asb asf ask aso ass ast at- ata atb atf ato ats att baa bab baf bak bao bas bat bba bbb bbf bbk bbo bbs bbt bfa bfb bff bfo bfs bft bka bkb bkf bkk bko bks bkt boa bob bof bok boo bos bot bsa bsb bsf bsk bso bss bst bta btb btf btk bto bts btt faa fab faf fak fao fas fat fba fbb fbf fbk fbo fbs fbt ffa fff ffk ffo ffs fft fka fkb fkf fkk fkt foa fob fof fok foo fos fot fsa fsb fsf fsk fso fss fst fta ftb ftf ftk fto fts ftt k-t ka- kaa kab kaf kak kao kas kat kba kbb kbf kbk kbo kbs kfa kff kfo kfs kkb kkk kks kkt koa kob kof kok koo kos kot ksa ksb ksf ksk kso kss kst kta ktb ktf ktk kto kts ktt oaa oab oaf oak oao oas oat ob- oba obb obf obk obo obs obt of- ofa ofb off ofo ofs oft oka okb okk oko oks oo- ooa oob oof ook ooo oos oot os- osa osb osf osk oso oss ost ot- ota otb otf otk oto ots ott saa sab saf sak sao sas sat sba sbb sbf sbk sbo sbs sbt sfa sfb sff sfk sfo sfs sft sk- ska skb skf skk sko sks skt soa sob sof sok soo sos sot ss- ssa ssb ssf ssk sso sss sst sta stb stf stk sto sts stt taa tab taf tak tao tas tat tba tbb tbf tbk tbo tbs tbt tfa tfb tff tfk tfo tfs tft tka tkb tkk tko tks tkt to- toa tob tof tok too tos tot tsa tsb tsf tsk tso tss tst tta ttb ttf ttk tto tts ttt

a-ak a-ok aaaa aaab aaaf aaas aaba aabb aabt aafa aafb aaff aaka aaoo aasa aasf aass aast aata aatf aatk aatt abaa abab abaf abak abas abat abb- abba abbb abbo abbs abbt abff aboa abob abof abok aboo abos abot abs- absa absf abss abta abts afaa afak afao afat afbs affa affo affs afft afka afoa afoo afsa afsb afst afta afts akaa akao akas akka akko akok akos akot aksa akst aoba aoks aoss aotf asaa asab asaf asak asao asas asat asba asbo asfa aska asko asks askt asob asof asok asos asot assa assk asso asss asst asta astb asto asts at-t ataa atab atak atas atat atbs atfb atfs atka atkt atob atof atok atos atot atsb atst atta atto atts baaa baaf baak baas baat baba babb babo babs baff bafo baft bak- baka bako baks bakt baos basa basf bask baso bass bast bata batf bato bats batt bbas bbbb bbbs bfas bffs bfta bfts bftt boab boak boas boat boba bobb bobo bobs bofa boff bofs boka boko boks boob boof book boos boot bosa bosk boso boss bost bota botb boto bots bott bsaa bsas bsat bsfa bsff bsfs bskt bsos bsts btaa btaf btob btss bttb f--k faaa faas faba fabo fabs fafa faff fafo fako fakt fasa faso fass fast fata fatf fato fats fatt ffff ffsa ffss fftf fkab foaf foak foba fobs fobt fofo foof fook foos foot fosa fosb foso foss fost fota foto fots fott fsas fsfo fssa fssf fsta ftos ftsa k-os kaaa kaab kaaf kaak kaas kaat kaba kabb kabf kabo kafa kaff kafs kaka kakk kako kaks kakt kaoa kaok kaos kas- kasa kasb kasf kask kaso kass kast kat- kata katb katf katk kato kats katt kbaa kbab kbak kbas kbat kbba kbbb kbbf kbbk kbbo kbbs kbbt kbfb kbff kbfk kbfo kbfs kbft kbkb kbkf kbkk kbko kboa kbob kbok kboo kbos kbot kbsa kbsb kbsk kbso kbss kbst kbta kbtb kbtf kbtk kbto kbts kbtt kfab kfat kfbk kfbt kffa kffb kfff kffk kfka kfkb kfok kfoo kfsa kfsk kfst kfta kftk kftt kkaa kkat kkba kkbb kkbo kkbs kkbt kkfs kkft kkkk kkoa kkob kkoo kkot kksa kksf kkss kkst kktk kkts koab koak koas koba kobb kobk kobo kobs kofa koff kofk kofo koft koka kokb kokf kokk koko koks koob kook kooo koos koot kos- kosa kosb kosf koso koss kost kota kotb kotk koto kots kott ksab ksaf ksak ksas ksat ksba ksbs ksfa ksfb ksfo ksft kska kskb kskf kskk ksko ksks ksob ksof ksok ksoo ksos kssa ksso ksss ksst ksta kstb kstk ksto ksts kstt ktaa ktak ktao ktas ktat ktba ktbb ktbt ktfb ktfo ktfs ktkb ktkk ktko ktks ktkt ktob ktok ktoo ktot ktsa ktsf ktso ktst kttf kttk ktto ktts kttt oafo oafs oaks oass oast oats obak obas obba obbo obkb obok obos obot obss obst obts ofas off- offa offo offs ofst ofta okak okas okka okko okok okot oksa okso okta okto ooaa ooak ooba ooff oofs oooo ooos oosa oost ootb oots osaf osak osas osat osba osfa osoo osos ossa ossb osso osta osts otak otas otbs oto- otof otok otoo otos otsa otso otta otto otts s-os saab saaf saak saas saat saba sabb sabo sabs safa safb saff safo saft saka sakb sakk sako saks saos sasa sasf sask saso sass sast sata satb sato sats satt sbaa sbas sbbs sbot sbsa sbst sbtk sfas sfba sfos sfss sfts skab skaf skat skot skss soak soas soat soba sobo sobs sobt sofa sofo soft soka sokk soko soof sook soos soot sosa soso soss sost sota sotk soto sots ssaa ssab ssao ssas ssat ssot sssa sssb sssf ssss ssta sstb ssts stab stak stas stat stbs stks stoa stob stof stok stoo stos stot stsf stss taa- taaf taas taat taba tabb tabo tabs tafa taff tafo