a-a a-b a-t aaa aab aad aak aao aas aat ab- aba abb abd abk abo abs abt ad- ada adb add adk ado ads adt aka akb akd akk ako aks aoa aob aod aok aoo aos aot as- asa asb asd ask aso ass ast at- ata atb atd ato ats att baa bab bad bak bao bas bat bba bbb bbd bbk bbo bbs bbt bda bdb bdd bdk bdo bds bdt bka bkb bkk bko bks bkt boa bob bod bok boo bos bot bsa bsb bsd bsk bso bss bst bta btb btd btk bto bts btt daa dab dad dak dao das dat dba dbb dbd dbk dbo dbs dbt dda ddb ddd ddk ddo dds ddt dka dkb dkk dko dks dkt doa dob dod dok doo dos dot dsa dsb dsd dsk dso dss dst dta dtb dtd dtk dto dts dtt k-t ka- kaa kab kad kak kao kas kat kba kbb kbd kbk kbo kbs kda kdb kdk kdo kds kdt kkb kkk kks kkt koa kob kod kok koo kos kot ksa ksb ksd ksk kso kss kst kta ktb ktk kto kts ktt oaa oab oad oak oao oas oat ob- oba obb obd obk obo obs obt oda odb odd odo ods odt oka okb okd okk oko oks oo- ooa oob ood ook ooo oos oot os- osa osb osd osk oso oss ost ot- ota otb otd otk oto ots ott saa sab sad sak sao sas sat sba sbb sbd sbk sbo sbs sbt sda sdb sdd sdk sdo sds sdt sk- ska skb skd skk sko sks skt soa sob sod sok soo sos sot ss- ssa ssb ssd ssk sso sss sst sta stb std stk sto sts stt taa tab tad tak tao tas tat tba tbb tbd tbk tbo tbs tbt tda tdb tdd tdk tdo tds tdt tka tkb tkk tko tks tkt to- toa tob tod tok too tos tot tsa tsb tsd tsk tso tss tst tta ttb ttd ttk tto tts ttt

a-ak a-do a-ok aaaa aaab aaad aaas aaba aabb aabd aabt aada aads aadt aaka aaoo aasa aasd aass aast aata aatk aatt abaa abab abad abak abas abat abb- abba abbb abbo abbs abbt abda abdo aboa abob abod abok aboo abos abot abs- absa absd abss abta abts adaa adab adad adak adao adas adat adba adda addd addo adds adob adod adok adoo ados adot adsa adso adss adst adta adts akaa akao akas akka akko akok akos akot aksa akst aoba aoks aosd aoss aotd asaa asab asad asak asao asas asat asba asbo asda asdo asds aska asko asks askt asob asod asok asos asot assa assd assk asso asss asst asta astb asto asts at-t ataa atab atad atak atas atat atbs atdt atka atkt atob atod atok atos atot atsb atst atta atto atts baaa baad baak baas baat baba babb babo babs bada badb badd bado bads bak- baka bako baks bakt baos basa bask baso bass bast bata bato bats batt bbad bbas bbbb bbbs bbdd bbdo bdos bdsd boab boad boak boas boat boba bobb bobo bobs boda bodb bodo bods boka boko boks boob bood book boos boot bosa bosk boso boss bost bota botb botd boto bots bott bsaa bsas bsat bsbd bskt bsod bsos bssd bsts btaa btdt btob btss bttb d-bo daab daad daas daba dabb dabo dabs dabt dada dado dads daka dako daks daos dasa dasb dasd dask dass dast data dato dats datt dbas dbos dbsa dbss dbtt dddd ddot ddss ddts dkba doab doak doas doat doba dobb dobs dod- doda dodd dodo dods doka doko doob dood dook doos doot dosa dosk doso doss dost dota dotd dotk doto dots dott dsba dsda dsoa dsos dssa dsst dsto dsts dtaa dtot dtss k-os kaaa kaab kaak kaas kaat kaba kabb kabd kabo kad- kada kadd kado kads kadt kaka kakk kako kaks kakt kaoa kaok kaos kas- kasa kasb kask kaso kass kast kat- kata katb katd katk kato kats katt kbaa kbab kbad kbak kbas kbat kbba kbbb kbbd kbbk kbbo kbbs kbbt kbdb kbdo kbds kbkb kbkk kbko kboa kbob kbod kbok kboo kbos kbot kbsa kbsb kbsk kbso kbss kbst kbta kbtb kbtk kbto kbts kbtt kdaa kdab kdad kdak kdao kdat kdbb kdbs kddb kddd kddk kdka kdkb kdkd kdkk kdko kdkt kdok kdot kdsd kdsk kdss kdst kdta kdtd kkaa kkat kkba kkbb kkbd kkbo kkbs kkbt kkda kkdd kkdo kkdt kkkk kkoa kkob kkoo kkot kksa kksd kkss kkst kktk kkts koab koak koas koba kobb kobk kobo kobs koda kodk kodo kods kodt koka kokb kokk koko koks koob kook kooo koos koot kos- kosa kosb kosd koso koss kost kota kotb kotd kotk koto kots kott ksab ksak ksas ksat ksba ksbs ksdk ksds kska kskb kskd kskk ksko ksks ksob ksok ksoo ksos kssa ksso ksss ksst ksta kstb kstk ksto ksts kstt ktaa ktak ktao ktas ktat ktba ktbb ktbt ktdb ktdd ktdk ktdo ktkb ktkk ktko ktks ktkt ktob ktok ktoo ktot ktsa ktsd ktso ktst kttk ktto ktts kttt oaks oass oast oats obad obak obas obba obbo obdt obkb obok obos obot obsd obss obst obtd obts odas odbo odda oddd odds odoo odos odot odso odts okak okas okka okko okok okot oksa okso okta okto ooaa ooak ooba ooda oooo ooos oosa oost ootb oots osak osas osat osba osoo osos ossa ossb ossd osso osta osts otak otas otbd otbs oto- otok otoo otos otsa otso otta otto otts s-os saab saad saak saas saat saba sabb sabo sabs sada sadb sadd sado sads sadt saka sakb sakk sako saks saos sasa sasd sask saso sass sast sata satb satd sato sats satt sbaa sbas sbbs sbds sbot sbsa sbsd sbst sbtk sdak sdba sdds sdot sdss skab skad skat skot sksd skss soad soak soas soat soba sobo