-th a-a a-b a-c a-t aaa aab aac aad aae aaf aah aak aan aao aat ab- aba abb abc abd abe abf abh abk abn abo abt ac- aca acb acc acd ace acf ach ack acn aco act ad- ada adb adc add ade adf adh adk adn ado adt aea aeb aec aed aee aef aeh aek aen aeo aet af- afa afb afc afd afe aff afh afk afn afo aft aha ahb ahc ahd ahe ahf ahh ahk ahn aho aht aka akb akc akd ake akh akk akn ako an- ana anb anc and ane anf anh ank ann ano ant aoa aob aoc aod aoe aof aoh aok aon aoo aot at- ata atb atc atd ate atf ath atn ato att baa bab bac bad bae baf bah bak ban bao bat bba bbb bbc bbd bbe bbf bbh bbk bbn bbo bbt bca bcb bcc bcd bce bcf bch bck bcn bco bct bda bdb bdc bdd bde bdf bdh bdk bdo bdt be- bea beb bec bed bee bef beh bek ben beo bet bfa bfb bfc bfd bfe bff bfh bfn bfo bft bha bhb bhc bhd bhe bhf bhh bhk bho bht bka bkb bkc bke bkf bkk bkn bko bkt bna bnb bnc bnd bne bnf bnk bnn bno bnt boa bob boc bod boe bof boh bok bon boo bot bta btb btc btd bte btf bth btk btn bto btt c-- caa cab cac cad cae caf cah cak can cao cat cba cbb cbc cbd cbe cbf cbh cbk cbn cbo cbt cca ccb ccc ccd cce ccf cch cck ccn cco cct cda cdb cdc cdd cde cdf cdh cdk cdn cdo cdt ce- cea ceb cec ced cee cef ceh cek cen ceo cet cfa cfb cfc cfd cfe cff cfh cfk cfn cfo cft ch- cha chb chc chd che chf chh chk chn cho cht cka ckb ckc ckd ckh cko ckt cn- cna cnb cnc cnd cne cnf cnh cnn cno cnt co- coa cob coc cod coe cof coh cok con coo cot cta ctb ctc ctd cte ctf cth ctk ctn cto ctt daa dab dac dad dae daf dah dak dan dao dat dba dbb dbc dbd dbe dbf dbh dbk dbn dbo dbt dca dcb dcc dcd dce dcf dck dcn dco dct dda ddb ddc ddd dde ddf ddh ddk ddn ddo ddt de- dea deb dec ded dee def deh dek den deo det dfa dfb dfc dfd dfe dff dfh dfk dfn dfo dft dh- dha dhb dhc dhd dhe dhf dhh dhk dho dht dka dkb dkc dke dkk dko dkt dna dnb dnc dnd dne dnf dnh dnk dnn dno dnt doa dob doc dod doe dof doh dok don doo dot dta dtb dtc dtd dte dtf dth dtk dtn dto dtt eaa eab eac ead eae eaf eah eak ean eao eat eba ebb ebc ebd ebe ebf ebh ebk ebn ebo ebt ec- eca ecb ecc ecd ece ecf ech eck ecn eco ect ed- eda edb edc edd ede edf edh edk edn edo edt eea eeb eec eed eee eef eek een eeo eet ef- efa efb efc efd efe eff efh efo eft eha ehb ehc ehd ehe ehf ehh ehn eho eht eka ekb ekc ekd eke ekf ekh eko ekt en- ena enb enc end ene enf enh enk enn eno ent eo- eoa eob eoc eod eoe eof eoh eok eon eoo eot eta etb etc etd ete etf eth etk etn eto ett faa fab fac fad fae faf fah fak fan fao fat fba fbb fbc fbd fbe fbf fbh fbk fbn fbo fbt fca fcb fcc fcd fce fcf fck fcn fco fct fda fdb fdc fdd fde fdf fdh fdk fdn fdo fdt fea feb fec fed fee fef feh fek fen feo fet ffa ffc ffd ffe fff ffh ffk ffn ffo fft fha fhb fhc fhe fhf fhh fhn fho fka fkb fkc fkf fkk fkt fna fnb fnc fnd fne fnf fnh fnk fnn fnt foa fob foc foe fof foh fok fon foo fot fta ftb ftc ftd fte ftf fth ftk ftn fto ftt haa hab hac had hae haf hah hak han hao hat hba hbb hbc hbd hbe hbf hbh hbk hbn hbo hbt hca hcb hcc hcd hce hcf hch hck hcn hco hct hda hdb hdc hdd hde hdf hdh hdk hdn hdo hdt he- hea heb hec hed hee hef heh hek hen heo het hfa hfb hfc hfd hfe hff hfh hfk hfn hfo hft hha hhb hhc hhd hhe hhf hhh hhk hhn hho hht hka hkb hkd hkf hkh hkk hkn hko hkt hna hnb hnc hnd hne hnf hnh hnk hnn hno hnt hoa hob hoc hod hoe hof hoh hok hon hoo hot hta htb htc htd hte htf hth htk htn hto htt k-t ka- kaa kab kac kad kae kaf kah kak kan kao kat kba kbb kbc kbd kbe kbf kbh kbk kbn kbo kca kcb kcc kcd kce kch kck kcn kct kda kdb kdc kde kdf kdh kdk kdo kdt ke- kea keb kec ked kee kef keh kek ken keo ket kfa kfc kfd kff kfh kfo kha khe khf khh khk khn kho kkb kkc kke kkh kkk kkn kkt kn- kna knc knd kne knf knk knn kno knt koa kob koc kod koe kof koh kok kon koo kot kta ktb ktc kte ktf kth ktk ktn kto ktt naa nab nac nad nae naf nah nak nan nao nat nba nbb nbc nbd nbe nbf nbk nbn nbo nbt nca ncb ncc ncd nce ncf nch nck ncn nco nct nda ndb ndc ndd nde ndf ndh ndk ndn ndo ndt ne- nea neb nec ned nee nef neh nek nen neo net nfa nfb nfc nfd nfe nff nfk nfn nfo