-er -th a-a a-b a-c a-t aaa aab aac aae aaf aah aak aao aar aat aau ab- aba abb abc abe abf abh abk abo abr abt abu ac- aca acb acc ace acf ach ack aco acr act acu aea aeb aec aee aef aeh aek aeo aer aet aeu af- afa afb afc afe aff afh afk afo afr aft afu aha ahb ahc ahe ahf ahh ahk aho ahr aht ahu aka akb akc ake akh akk ako akr aku aoa aob aoc aoe aof aoh aok aoo aor aot aou ar- ara arb arc are arf arh ark aro arr art aru at- ata atb atc ate atf ath ato atr att atu au- aua aub auc aue auf auh auk auo aur aut b-u baa bab bac bae baf bah bak bao bar bat bau bba bbb bbc bbe bbf bbh bbk bbo bbr bbt bbu bca bcb bcc bce bcf bch bck bco bcr bct bcu be- bea beb bec bee bef beh bek beo ber bet beu bfa bfb bfc bfe bff bfh bfo bfr bft bfu bha bhb bhc bhe bhf bhh bhk bho bhr bht bhu bka bkb bkc bke bkf bkk bko bkr bkt boa bob boc boe bof boh bok boo bor bot bou bra brb bre brf brh brk bro brr brt bru bta btb btc bte btf bth btk bto btr btt btu bua bub buc bue buf buh buk buo bur but buu c-- caa cab cac cae caf cah cak cao car cat cau cba cbb cbc cbe cbf cbh cbk cbo cbr cbt cbu cca ccb ccc cce ccf cch cck cco ccr cct ccu ce- cea ceb cec cee cef ceh cek ceo cer cet ceu cfa cfb cfc cfe cff cfh cfk cfo cfr cft cfu ch- cha chb chc che chf chh chk cho chr cht chu cka ckb ckc ckh cko ckt co- coa cob coc coe cof coh cok coo cor cot cou cra crb crc cre crf crh crk cro crr crt cru cta ctb ctc cte ctf cth ctk cto ctr ctt ctu cua cub cuc cue cuf cuh cuk cuo cur cut cuu eaa eab eac eae eaf eah eak eao ear eat eau eba ebb ebc ebe ebf ebh ebk ebo ebr ebt ebu ec- eca ecb ecc ece ecf ech eck eco ecr ect ecu eea eeb eec eee eef eek eeo eer eet ef- efa efb efc efe eff efh efo efr eft eha ehb ehc ehe ehf ehh eho ehr eht ehu eka ekb ekc eke ekf ekh eko ekr ekt eku eo- eoa eob eoc eoe eof eoh eok eoo eor eot eou era erb erc ere erf erh erk ero err ert eru eta etb etc ete etf eth etk eto etr ett etu eu- eua eub euc eue euf eur eut faa fab fac fae faf fah fak fao far fat fau fba fbb fbc fbe fbf fbh fbk fbo fbr fbt fbu fca fcb fcc fce fcf fck fco fcr fct fcu fea feb fec fee fef feh fek feo fer fet feu ffa ffc ffe fff ffh ffk ffo ffr fft ffu fha fhb fhc fhe fhf fhh fho fhr fka fkb fkc fkf fkk fkt foa fob foc foe fof foh fok foo for fot fou fra frb frc fre frf frh frk fro frr frt fru fta ftb ftc fte ftf fth ftk fto ftr ftt ftu fua fub fue fuf fuk fuo fur fut fuu haa hab hac hae haf hah hak hao har hat hau hba hbb hbc hbe hbf hbh hbk hbo hbr hbt hbu hca hcb hcc hce hcf hch hck hco hcr hct he- hea heb hec hee hef heh hek heo her het heu hfa hfb hfc hfe hff hfh hfk hfo hfr hft hfu hha hhb hhc hhe hhf hhh hhk hho hhr hht hhu hka hkb hkf hkh hkk hko hkr hkt hku hoa hob hoc hoe hof hoh hok hoo hor hot hou hr- hra hrb hrc hre hrf hrh hrk hro hrr hrt hru hta htb htc hte htf hth htk hto htr htt hua hub huc hue huf huh huk huo hur hut huu k-t ka- kaa kab kac kae kaf kah kak kao kar kat kau kba kbb kbc kbe kbf kbh kbk kbo kbr kbu kca kcb kcc kce kch kck kcr kct kcu ke- kea keb kec kee kef keh kek keo ker ket kfa kfc kff kfh kfo kfu kha khe khf khh khk kho khr khu kkb kkc kke kkh kkk kkr kkt kku koa kob koc koe kof koh kok koo kor kot kou kra krc krf krk kro krr krt kru kta ktb ktc kte ktf kth ktk kto ktr ktt ktu kub kuc kue kuh kuk kur kut kuu oaa oab oac oae oaf oah oak oao oar oat oau ob- oba obb obc obe obf obh obk obo obr obt obu oc- oca ocb occ ocf och ock oco ocr oct ocu oea oeb oec oee oef oeh oeo oer oet of- ofa ofb ofc ofe off ofo ofr oft ofu oha ohc ohe ohf ohh oho ohr oht ohu oka okb okc oke okk oko okr oku oo- ooa oob ooc oof ooh ook ooo oor oot or- ora orb orc ore orf orh ork oro orr ort oru ot- ota otb otc ote otf oth otk oto otr ott otu ou- oua ouc oue ouf ouh ouk ouo our out ra- raa rab rac rae raf rah rak rao rar rat rau rba rbb rbc rbe rbf rbh rbk rbo rbr rbt rbu rca rcb rcc rce rcf rch rco rcr rct rcu re- rea reb rec ree ref reh rek reo rer ret reu rfa rfb rfc rfe rff rfh rfk rfo rfr rft rfu rh- rha rhb rhc rhe rhf rhh rho rhr rht rhu rkb rkc rke rkf rkk