a-a a-b a-c aaa aab aac aag aah aan aar aas aau ab- aba abb abc abg abh abn abr abs abu ac- aca acb acc acg ach acn acr acs acu ag- aga agb agc agg agh agn agr ags agu aha ahb ahc ahg ahh ahn ahr ahs ahu an- ana anb anc ang anh ann anr ans anu ar- ara arb arc arg arh arn arr ars aru as- asa asb asc asg ash asn asr ass asu au- aua aub auc aug auh aun aur aus b-u baa bab bac bag bah ban bar bas bau bba bbb bbc bbg bbh bbn bbr bbs bbu bca bcb bcc bcg bch bcn bcr bcs bcu bga bgb bgc bgg bgh bgn bgr bgs bgu bha bhb bhc bhg bhh bhr bhs bhu bna bnb bnc bng bnn bnr bns bnu bra brb brg brh brn brr brs bru bsa bsb bsc bsg bsh bsn bsr bss bsu bua bub buc bug buh bun bur bus buu c-- caa cab cac cag cah can car cas cau cba cbb cbc cbg cbh cbn cbr cbs cbu cca ccb ccc ccg cch ccn ccr ccs ccu cga cgb cgc cgg cgh cgn cgr cgs cgu ch- cha chb chc chg chh chn chr chs chu cn- cna cnb cnc cng cnh cnn cnr cns cnu cra crb crc crg crh crn crr crs cru csa csb csc csg csh csn csr css csu cua cub cuc cug cuh cun cur cus cuu gaa gab gac gag gah gan gar gas gau gba gbc gbg gbh gbn gbr gbs gbu gca gcb gcc gcg gch gcn gcr gcs gcu gga ggb ggc ggg ggh ggn ggr ggs ggu gha ghb ghc ghg ghh ghn ghr ghs gna gnb gnc gnn gnr gns gnu gra grb grc grg grh grn grr grs gru gsa gsb gsc gsg gsn gsr gss gsu gu- gua gub guc gug gun gur gus guu haa hab hac hag hah han har has hau hba hbb hbc hbg hbh hbn hbr hbs hbu hca hcb hcc hcg hch hcn hcr hcs hga hgb hgc hgg hgh hgn hgr hgs hgu hha hhb hhc hhg hhh hhn hhr hhs hhu hna hnb hnc hng hnh hnn hns hnu hr- hra hrb hrc hrg hrh hrn hrr hrs hru hsa hsb hsc hsg hsh hsn hsr hss hsu hua hub huc hug huh hun hur hus huu naa nab nac nag nah nan nar nas nau nba nbb nbc nbg nbn nbr nbs nbu nca ncb ncc ncg nch ncn ncr ncs ncu nga ngb ngc ngg ngh ngn ngs ngu nha nhb nhc nhg nhh nhn nhr nhs nhu nna nnb nnc nng nnh nnn nns nnu nra nrb nrc nrg nrn nrr nrs nru nsa nsb nsc nsg nsh nsn nsr nss nsu nua nub nuc nug nuh nun nur nus nuu ra- raa rab rac rag rah ran rar ras rau rba rbb rbc rbg rbh rbn rbr rbs rbu rca rcb rcc rcg rch rcn rcr rcs rcu rga rgb rgc rgg rgh rgn rgr rgs rh- rha rhb rhc rhg rhh rhn rhr rhs rhu rna rnb rnc rng rnh rnn rnr rns rnu rra rrb rrc rrg rrh rrn rrr rrs rru rsa rsb rsc rsg rsh rsn rsr rss rsu rua rub ruc rug ruh run rur rus ruu saa sab sac sag sah san sar sas sau sba sbb sbc sbg sbh sbn sbr sbs sbu sca scb scc scg sch scn scr scs scu sga sgb sgc sgg sgh sgn sgr sgs sgu sh- sha shb shc shg shh shn shr shs shu sna snb snc sng snn snr sns snu sr- sra srb src srg srh srn srr srs ss- ssa ssb ssc ssg ssh ssn ssr sss ssu sua sub suc sug suh sun sur sus suu ua- uaa uab uac uag uah uan uar uas uau uba ubb ubc ubg ubh ubn ubr ubs ubu uca ucb ucc ucg uch ucn ucr ucs ucu uga ugb ugc ugg ugh ugn ugr ugs ugu uha uhb uhc uhh uhr uhs uhu un- una unb unc ung unh unn unr uns unu ur- ura urb urc urg urn urr urs uru usa usb usc usg ush usn usr uss usu uua uuc uug uun uur uus uuu