-th a-a a-b a-c a-t aaa aab aac aah aan aao aar aas aat aau ab- aba abb abc abh abn abo abr abs abt abu ac- aca acb acc ach acn aco acr acs act acu aha ahb ahc ahh ahn aho ahr ahs aht ahu an- ana anb anc anh ann ano anr ans ant anu aoa aob aoc aoh aon aoo aor aos aot aou ar- ara arb arc arh arn aro arr ars art aru as- asa asb asc ash asn aso asr ass ast asu at- ata atb atc ath atn ato atr ats att atu au- aua aub auc auh aun auo aur aus aut b-u baa bab bac bah ban bao bar bas bat bau bba bbb bbc bbh bbn bbo bbr bbs bbt bbu bca bcb bcc bch bcn bco bcr bcs bct bcu bha bhb bhc bhh bho bhr bhs bht bhu bna bnb bnc bnn bno bnr bns bnt bnu boa bob boc boh bon boo bor bos bot bou bra brb brh brn bro brr brs brt bru bsa bsb bsc bsh bsn bso bsr bss bst bsu bta btb btc bth btn bto btr bts btt btu bua bub buc buh bun buo bur bus but buu c-- caa cab cac cah can cao car cas cat cau cba cbb cbc cbh cbn cbo cbr cbs cbt cbu cca ccb ccc cch ccn cco ccr ccs cct ccu ch- cha chb chc chh chn cho chr chs cht chu cn- cna cnb cnc cnh cnn cno cnr cns cnt cnu co- coa cob coc coh con coo cor cos cot cou cra crb crc crh crn cro crr crs crt cru csa csb csc csh csn cso csr css cst csu cta ctb ctc cth ctn cto ctr cts ctt ctu cua cub cuc cuh cun cuo cur cus cut cuu haa hab hac hah han hao har has hat hau hba hbb hbc hbh hbn hbo hbr hbs hbt hbu hca hcb hcc hch hcn hco hcr hcs hct hha hhb hhc hhh hhn hho hhr hhs hht hhu hna hnb hnc hnh hnn hno hns hnt hnu hoa hob hoc hoh hon hoo hor hos hot hou hr- hra hrb hrc hrh hrn hro hrr hrs hrt hru hsa hsb hsc hsh hsn hsr hss hst hsu hta htb htc hth htn hto htr hts htt hua hub huc huh hun huo hur hus hut huu naa nab nac nah nan nao nar nas nat nau nba nbb nbc nbn nbo nbr nbs nbt nbu nca ncb ncc nch ncn nco ncr ncs nct ncu nha nhb nhc nhh nhn nhr nhs nht nhu nna nnb nnc nnh nnn nno nns nnt nnu no- noa nob noc noh non noo nor nos not nou nra nrb nrc nrn nro nrr nrs nrt nru nsa nsb nsc nsh nsn nso nsr nss nst nsu nta ntb ntc nth ntn nto ntr nts ntt ntu nua nub nuc nuh nun nuo nur nus nut nuu oaa oab oac oah oan oao oar oas oat oau ob- oba obb obc obh obn obo obr obs obt obu oc- oca ocb occ och ocn oco ocr ocs oct ocu oha ohc ohh ohn oho ohr ohs oht ohu on- ona onb onc onh onn ono onr ons ont onu oo- ooa oob ooc ooh oon ooo oor oos oot or- ora orb orc orh orn oro orr ors ort oru os- osa osb osc osh osn oso osr oss ost osu ot- ota otb otc oth otn oto otr ots ott otu ou- oua ouc ouh oun ouo our ous out ra- raa rab rac rah ran rao rar ras rat rau rba rbb rbc rbh rbn rbo rbr rbs rbt rbu rca rcb rcc rch rcn rco rcr rcs rct rcu rh- rha rhb rhc rhh rhn rho rhr rhs rht rhu rna rnb rnc rnh rnn rno rnr rns rnt rnu roa rob roc roh ron roo ror ros rot rou rra rrb rrc rrh rrn rrr rrs rrt rru rsa rsb rsc rsh rsn rso rsr rss rst rsu rta rtb rtc rtn rto rtr rts rtt rtu rua rub ruc ruh run ruo rur rus rut ruu saa sab sac sah san sao sar sas sat sau sba sbb sbc sbh sbn sbo sbr sbs sbt sbu sca scb scc sch scn sco scr scs sct scu sh- sha shb shc shh shn sho shr shs sht shu sna snb snc snn sno snr sns snt snu soa sob soc soh son soo sor sos sot sou sr- sra srb src srh srn sro srr srs srt ss- ssa ssb ssc ssh ssn sso ssr sss sst ssu sta stb stc sth stn sto str sts stt stu sua sub suc suh sun suo sur sus sut suu taa tab tac tah tan tao tar tas tat tau tba tbb tbc tbh tbn tbo tbr tbs tbt tbu tca tcb tcc tch tcn tco tcr tcs tct tcu th- tha thb thc thh thn tho thr ths tht thu tna tnb tnc tnh tnn tno tnr tns tnt to- toa tob toc toh ton too tor tos tot tou tra trb trc trh trn tro trr trs trt tru tsa tsb tsc tsh tsn tso tsr tss tst tsu tta ttb ttc tth ttn tto ttr tts ttt ttu tua tub tuc tuh tun tuo tur tus tut tuu ua- uaa uab uac uah uan uao uar uas uat uau uba ubb ubc ubh ubn ubo ubr ubs ubt ubu uca ucb ucc uch ucn uco ucr ucs uct ucu uha uhb uhc uhh uho uhr uhs uht uhu un- una unb unc unh unn uno unr uns unt unu uoa uob uoc uon uoo uor uos uot ur- ura urb urc urn uro urr urs urt uru usa usb usc ush usn uso usr uss ust usu uta utb utc uth utn uto utr uts