-th a-a a-b a-t aaa aab aaf aah aan aao aar aas aat ab- aba abb abf abh abn abo abr abs abt af- afa afb aff afh afn afo afr afs aft aha ahb ahf ahh ahn aho ahr ahs aht an- ana anb anf anh ann ano anr ans ant aoa aob aof aoh aon aoo aor aos aot ar- ara arb arf arh arn aro arr ars art as- asa asb asf ash asn aso asr ass ast at- ata atb atf ath atn ato atr ats att baa bab baf bah ban bao bar bas bat bba bbb bbf bbh bbn bbo bbr bbs bbt bfa bfb bff bfh bfn bfo bfr bfs bft bha bhb bhf bhh bho bhr bhs bht bna bnb bnf bnn bno bnr bns bnt boa bob bof boh bon boo bor bos bot bra brb brf brh brn bro brr brs brt bsa bsb bsf bsh bsn bso bsr bss bst bta btb btf bth btn bto btr bts btt faa fab faf fah fan fao far fas fat fba fbb fbf fbh fbn fbo fbr fbs fbt ffa fff ffh ffn ffo ffr ffs fft fha fhb fhf fhh fhn fho fhr fhs fna fnb fnf fnh fnn fnr fns fnt foa fob fof foh fon foo for fos fot fra frb frf frh frn fro frr frs frt fsa fsb fsf fsh fsn fso fsr fss fst fta ftb ftf fth ftn fto ftr fts ftt haa hab haf hah han hao har has hat hba hbb hbf hbh hbn hbo hbr hbs hbt hfa hfb hff hfh hfn hfo hfr hfs hft hha hhb hhf hhh hhn hho hhr hhs hht hna hnb hnf hnh hnn hno hns hnt hoa hob hof hoh hon hoo hor hos hot hr- hra hrb hrf hrh hrn hro hrr hrs hrt hsa hsb hsf hsh hsn hsr hss hst hta htb htf hth htn hto htr hts htt naa nab naf nah nan nao nar nas nat nba nbb nbf nbn nbo nbr nbs nbt nfa nfb nff nfn nfo nfr nfs nft nha nhb nhf nhh nhn nhr nhs nht nna nnb nnf nnh nnn nno nns nnt no- noa nob nof noh non noo nor nos not nra nrb nrf nrn nro nrr nrs nrt nsa nsb nsf nsh nsn nso nsr nss nst nta ntb ntf nth ntn nto ntr nts ntt oaa oab oaf oah oan oao oar oas oat ob- oba obb obf obh obn obo obr obs obt of- ofa ofb off ofn ofo ofr ofs oft oha ohf ohh ohn oho ohr ohs oht on- ona onb onf onh onn ono onr ons ont oo- ooa oob oof ooh oon ooo oor oos oot or- ora orb orf orh orn oro orr ors ort os- osa osb osf osh osn oso osr oss ost ot- ota otb otf oth otn oto otr ots ott ra- raa rab raf rah ran rao rar ras rat rba rbb rbf rbh rbn rbo rbr rbs rbt rfa rfb rff rfh rfn rfo rfr rfs rft rh- rha rhb rhf rhh rhn rho rhr rhs rht rna rnb rnh rnn rno rnr rns rnt roa rob rof roh ron roo ror ros rot rra rrb rrf rrh rrn rrr rrs rrt rsa rsb rsf rsh rsn rso rsr rss rst rta rtb rtf rtn rto rtr rts rtt saa sab saf sah san sao sar sas sat sba sbb sbf sbh sbn sbo sbr sbs sbt sfa sfb sff sfh sfn sfo sfr sfs sft sh- sha shb shf shh shn sho shr shs sht sna snb snf snn sno snr sns snt soa sob sof soh son soo sor sos sot sr- sra srb srf srh srn sro srr srs srt ss- ssa ssb ssf ssh ssn sso ssr sss sst sta stb stf sth stn sto str sts stt taa tab taf tah tan tao tar tas tat tba tbb tbf tbh tbn tbo tbr tbs tbt tfa tfb tff tfh tfn tfo tfr tfs tft th- tha thb thf thh thn tho thr ths tht tna tnb tnf tnh tnn tno tnr tns tnt to- toa tob tof toh ton too tor tos tot tra trb trf trh trn tro trr trs trt tsa tsb tsf tsh tsn tso tsr tss tst tta ttb ttf tth ttn tto ttr tts ttt