-th a-a a-b a-c a-t aaa aab aac aad aaf aah aak aan aao aar aas aat ab- aba abb abc abd abf abh abk abn abo abr abs abt ac- aca acb acc acd acf ach ack acn aco acr acs act ad- ada adb adc add adf adh adk adn ado adr ads adt af- afa afb afc afd aff afh afk afn afo afr afs aft aha ahb ahc ahd ahf ahh ahk ahn aho ahr ahs aht aka akb akc akd akh akk akn ako akr aks an- ana anb anc and anf anh ank ann ano anr ans ant aoa aob aoc aod aof aoh aok aon aoo aor aos aot ar- ara arb arc ard arf arh ark arn aro arr ars art as- asa asb asc asd asf ash ask asn aso asr ass ast at- ata atb atc atd atf ath atn ato atr ats att baa bab bac bad baf bah bak ban bao bar bas bat bba bbb bbc bbd bbf bbh bbk bbn bbo bbr bbs bbt bca bcb bcc bcd bcf bch bck bcn bco bcr bcs bct bda bdb bdc bdd bdf bdh bdk bdo bdr bds bdt bfa bfb bfc bfd bff bfh bfn bfo bfr bfs bft bha bhb bhc bhd bhf bhh bhk bho bhr bhs bht bka bkb bkc bkf bkk bkn bko bkr bks bkt bna bnb bnc bnd bnf bnk bnn bno bnr bns bnt boa bob boc bod bof boh bok bon boo bor bos bot bra brb brd brf brh brk brn bro brr brs brt bsa bsb bsc bsd bsf bsh bsk bsn bso bsr bss bst bta btb btc btd btf bth btk btn bto btr bts btt c-- caa cab cac cad caf cah cak can cao car cas cat cba cbb cbc cbd cbf cbh cbk cbn cbo cbr cbs cbt cca ccb ccc ccd ccf cch cck ccn cco ccr ccs cct cda cdb cdc cdd cdf cdh cdk cdn cdo cdr cds cdt cfa cfb cfc cfd cff cfh cfk cfn cfo cfr cfs cft ch- cha chb chc chd chf chh chk chn cho chr chs cht cka ckb ckc ckd ckh cko cks ckt cn- cna cnb cnc cnd cnf cnh cnn cno cnr cns cnt co- coa cob coc cod cof coh cok con coo cor cos cot cra crb crc crd crf crh crk crn cro crr crs crt csa csb csc csd csf csh csk csn cso csr css cst cta ctb ctc ctd ctf cth ctk ctn cto ctr cts ctt daa dab dac dad daf dah dak dan dao dar das dat dba dbb dbc dbd dbf dbh dbk dbn dbo dbr dbs dbt dca dcb dcc dcd dcf dck dcn dco dcr dcs dct dda ddb ddc ddd ddf ddh ddk ddn ddo ddr dds ddt dfa dfb dfc dfd dff dfh dfk dfn dfo dfr dfs dft dh- dha dhb dhc dhd dhf dhh dhk dho dhr dhs dht dka dkb dkc dkk dko dkr dks dkt dna dnb dnc dnd dnf dnh dnk dnn dno dnr dns dnt doa dob doc dod dof doh dok don doo dor dos dot dra drb drc drd drk drn dro drr drs drt dsa dsb dsc dsd dsf dsh dsk dsn dso dsr dss dst dta dtb dtc dtd dtf dth dtk dtn dto dtr dts dtt faa fab fac fad faf fah fak fan fao far fas fat fba fbb fbc fbd fbf fbh fbk fbn fbo fbr fbs fbt fca fcb fcc fcd fcf fck fcn fco fcr fcs fct fda fdb fdc fdd fdf fdh fdk fdn fdo fdr fds fdt ffa ffc ffd fff ffh ffk ffn ffo ffr ffs fft fha fhb fhc fhf fhh fhn fho fhr fhs fka fkb fkc fkf fkk fkt fna fnb fnc fnd fnf fnh fnk fnn fnr fns fnt foa fob foc fof foh fok fon foo for fos fot fra frb frc frd frf frh frk frn fro frr frs frt fsa fsb fsc fsd fsf fsh fsk fsn fso fsr fss fst fta ftb ftc ftd ftf fth ftk ftn fto ftr fts ftt haa hab hac had haf hah hak han hao har has hat hba hbb hbc hbd hbf hbh hbk hbn hbo hbr hbs hbt hca hcb hcc hcd hcf hch hck hcn hco hcr hcs hct hda hdb hdc hdd hdf hdh hdk hdn hdo hdr hds hdt hfa hfb hfc hfd hff hfh hfk hfn hfo hfr hfs hft hha hhb hhc hhd hhf hhh hhk hhn hho hhr hhs hht hka hkb hkd hkf hkh hkk hkn hko hkr hks hkt hna hnb hnc hnd hnf hnh hnk hnn hno hns hnt hoa hob hoc hod hof hoh hok hon hoo hor hos hot hr- hra hrb hrc hrd hrf hrh hrk hrn hro hrr hrs hrt hsa hsb hsc hsd hsf hsh hsk hsn hsr hss hst hta htb htc htd htf hth htk htn hto htr hts htt k-t ka- kaa kab kac kad kaf kah kak kan kao kar kas kat kba kbb kbc kbd kbf kbh kbk kbn kbo kbr kbs kca kcb kcc kcd kch kck kcn kcr kcs kct kda kdb kdc kdf kdh kdk kdo kdr kds kdt kfa kfc kfd kff kfh kfo kfs kha khf khh khk khn kho khr khs kkb kkc kkh kkk kkn kkr kks kkt kn- kna knc knd knf knk knn kno knr knt koa kob koc kod kof koh kok kon koo kor kos kot kra krc krd krf krk krn kro krr krs krt ksa ksb ksc ksd ksf ksh ksk ksn kso ksr kss kst kta ktb ktc ktf kth ktk ktn kto ktr kts ktt naa nab nac nad naf nah nak nan nao nar nas nat nba nbb nbc nbd nbf nbk nbn nbo nbr nbs nbt nca ncb ncc ncd ncf nch nck ncn nco ncr