a-a a-b a-c aaa aab aac aag aah aan aas aau ab- aba abb abc abg abh abn abs abu ac- aca acb acc acg ach acn acs acu ag- aga agb agc agg agh agn ags agu aha ahb ahc ahg ahh ahn ahs ahu an- ana anb anc ang anh ann ans anu as- asa asb asc asg ash asn ass asu au- aua aub auc aug auh aun aus b-u baa bab bac bag bah ban bas bau bba bbb bbc bbg bbh bbn bbs bbu bca bcb bcc bcg bch bcn bcs bcu bga bgb bgc bgg bgh bgn bgs bgu bha bhb bhc bhg bhh bhs bhu bna bnb bnc bng bnn bns bnu bsa bsb bsc bsg bsh bsn bss bsu bua bub buc bug buh bun bus buu c-- caa cab cac cag cah can cas cau cba cbb cbc cbg cbh cbn cbs cbu cca ccb ccc ccg cch ccn ccs ccu cga cgb cgc cgg cgh cgn cgs cgu ch- cha chb chc chg chh chn chs chu cn- cna cnb cnc cng cnh cnn cns cnu csa csb csc csg csh csn css csu cua cub cuc cug cuh cun cus cuu gaa gab gac gag gah gan gas gau gba gbc gbg gbh gbn gbs gbu gca gcb gcc gcg gch gcn gcs gcu gga ggb ggc ggg ggh ggn ggs ggu gha ghb ghc ghg ghh ghn ghs gna gnb gnc gnn gns gnu gsa gsb gsc gsg gsn gss gsu gu- gua gub guc gug gun gus guu haa hab hac hag hah han has hau hba hbb hbc hbg hbh hbn hbs hbu hca hcb hcc hcg hch hcn hcs hga hgb hgc hgg hgh hgn hgs hgu hha hhb hhc hhg hhh hhn hhs hhu hna hnb hnc hng hnh hnn hns hnu hsa hsb hsc hsg hsh hsn hss hsu hua hub huc hug huh hun hus huu naa nab nac nag nah nan nas nau nba nbb nbc nbg nbn nbs nbu nca ncb ncc ncg nch ncn ncs ncu nga ngb ngc ngg ngh ngn ngs ngu nha nhb nhc nhg nhh nhn nhs nhu nna nnb nnc nng nnh nnn nns nnu nsa nsb nsc nsg nsh nsn nss nsu nua nub nuc nug nuh nun nus nuu saa sab sac sag sah san sas sau sba sbb sbc sbg sbh sbn sbs sbu sca scb scc scg sch scn scs scu sga sgb sgc sgg sgh sgn sgs sgu sh- sha shb shc shg shh shn shs shu sna snb snc sng snn sns snu ss- ssa ssb ssc ssg ssh ssn sss ssu sua sub suc sug suh sun sus suu ua- uaa uab uac uag uah uan uas uau uba ubb ubc ubg ubh ubn ubs ubu uca ucb ucc ucg uch ucn ucs ucu uga ugb ugc ugg ugh ugn ugs ugu uha uhb uhc uhh uhs uhu un- una unb unc ung unh unn uns unu usa usb usc usg ush usn uss usu uua uuc uug uun uus uuu