-th a-a a-b a-c a-t aaa aab aac aad aaf aah aak aan aao aar aat ab- aba abb abc abd abf abh abk abn abo abr abt ac- aca acb acc acd acf ach ack acn aco acr act ad- ada adb adc add adf adh adk adn ado adr adt af- afa afb afc afd aff afh afk afn afo afr aft aha ahb ahc ahd ahf ahh ahk ahn aho ahr aht aka akb akc akd akh akk akn ako akr an- ana anb anc and anf anh ank ann ano anr ant aoa aob aoc aod aof aoh aok aon aoo aor aot ar- ara arb arc ard arf arh ark arn aro arr art at- ata atb atc atd atf ath atn ato atr att baa bab bac bad baf bah bak ban bao bar bat bba bbb bbc bbd bbf bbh bbk bbn bbo bbr bbt bca bcb bcc bcd bcf bch bck bcn bco bcr bct bda bdb bdc bdd bdf bdh bdk bdo bdr bdt bfa bfb bfc bfd bff bfh bfn bfo bfr bft bha bhb bhc bhd bhf bhh bhk bho bhr bht bka bkb bkc bkf bkk bkn bko bkr bkt bna bnb bnc bnd bnf bnk bnn bno bnr bnt boa bob boc bod bof boh bok bon boo bor bot bra brb brd brf brh brk brn bro brr brt bta btb btc btd btf bth btk btn bto btr btt c-- caa cab cac cad caf cah cak can cao car cat cba cbb cbc cbd cbf cbh cbk cbn cbo cbr cbt cca ccb ccc ccd ccf cch cck ccn cco ccr cct cda cdb cdc cdd cdf cdh cdk cdn cdo cdr cdt cfa cfb cfc cfd cff cfh cfk cfn cfo cfr cft ch- cha chb chc chd chf chh chk chn cho chr cht cka ckb ckc ckd ckh cko ckt cn- cna cnb cnc cnd cnf cnh cnn cno cnr cnt co- coa cob coc cod cof coh cok con coo cor cot cra crb crc crd crf crh crk crn cro crr crt cta ctb ctc ctd ctf cth ctk ctn cto ctr ctt daa dab dac dad daf dah dak dan dao dar dat dba dbb dbc dbd dbf dbh dbk dbn dbo dbr dbt dca dcb dcc dcd dcf dck dcn dco dcr dct dda ddb ddc ddd ddf ddh ddk ddn ddo ddr ddt dfa dfb dfc dfd dff dfh dfk dfn dfo dfr dft dh- dha dhb dhc dhd dhf dhh dhk dho dhr dht dka dkb dkc dkk dko dkr dkt dna dnb dnc dnd dnf dnh dnk dnn dno dnr dnt doa dob doc dod dof doh dok don doo dor dot dra drb drc drd drk drn dro drr drt dta dtb dtc dtd dtf dth dtk dtn dto dtr dtt faa fab fac fad faf fah fak fan fao far fat fba fbb fbc fbd fbf fbh fbk fbn fbo fbr fbt fca fcb fcc fcd fcf fck fcn fco fcr fct fda fdb fdc fdd fdf fdh fdk fdn fdo fdr fdt ffa ffc ffd fff ffh ffk ffn ffo ffr fft fha fhb fhc fhf fhh fhn fho fhr fka fkb fkc fkf fkk fkt fna fnb fnc fnd fnf fnh fnk fnn fnr fnt foa fob foc fof foh fok fon foo for fot fra frb frc frd frf frh frk frn fro frr frt fta ftb ftc ftd ftf fth ftk ftn fto ftr ftt haa hab hac had haf hah hak han hao har hat hba hbb hbc hbd hbf hbh hbk hbn hbo hbr hbt hca hcb hcc hcd hcf hch hck hcn hco hcr hct hda hdb hdc hdd hdf hdh hdk hdn hdo hdr hdt hfa hfb hfc hfd hff hfh hfk hfn hfo hfr hft hha hhb hhc hhd hhf hhh hhk hhn hho hhr hht hka hkb hkd hkf hkh hkk hkn hko hkr hkt hna hnb hnc hnd hnf hnh hnk hnn hno hnt hoa hob hoc hod hof hoh hok hon hoo hor hot hr- hra hrb hrc hrd hrf hrh hrk hrn hro hrr hrt hta htb htc htd htf hth htk htn hto htr htt k-t ka- kaa kab kac kad kaf kah kak kan kao kar kat kba kbb kbc kbd kbf kbh kbk kbn kbo kbr kca kcb kcc kcd kch kck kcn kcr kct kda kdb kdc kdf kdh kdk kdo kdr kdt kfa kfc kfd kff kfh kfo kha khf khh khk khn kho khr kkb kkc kkh kkk kkn kkr kkt kn- kna knc knd knf knk knn kno knr knt koa kob koc kod kof koh kok kon koo kor kot kra krc krd krf krk krn kro krr krt kta ktb ktc ktf kth ktk ktn kto ktr ktt naa nab nac nad naf nah nak nan nao nar nat nba nbb nbc nbd nbf nbk nbn nbo nbr nbt nca ncb ncc ncd ncf nch nck ncn nco ncr nct nda ndb ndc ndd ndf ndh ndk ndn ndo ndr ndt nfa nfb nfc nfd nff nfk nfn nfo nfr nft nha nhb nhc nhd nhf nhh nhk nhn nhr nht nka nkc nkf nkk nkn nko nkr nkt nna nnb nnc nnf nnh nnk nnn nno nnt no- noa nob noc nod nof noh nok non noo nor not nra nrb nrc nrd nrf nrk nrn nro nrr nrt nta ntb ntc ntd ntf nth ntk ntn nto ntr ntt oaa oab oac oad oaf oah oak oan oao oar oat ob- oba obb obc obd obf obh obk obn obo obr obt oc- oca ocb occ ocd ocf och ock ocn oco ocr oct oda odb odc odd odf odh odn odo odr odt of- ofa ofb ofc ofd off ofn ofo ofr oft oha ohc ohd ohf ohh ohn oho ohr oht oka okb okc okd okk oko okr on- ona onb onc ond onf onh onk