-er a-a a-b a-t aaa aab aae aag aan aao aar aas aat aau ab- aba abb abe abg abn abo abr abs abt abu aea aeb aee aeg aen aeo aer aes aet aeu ag- aga agb age agg agn ago agr ags agt agu an- ana anb ane ang ann ano anr ans ant anu aoa aob aoe aog aon aoo aor aos aot aou ar- ara arb are arg arn aro arr ars art aru as- asa asb ase asg asn aso asr ass ast asu at- ata atb ate atg atn ato atr ats att atu au- aua aub aue aug aun auo aur aus aut b-u baa bab bae bag ban bao bar bas bat bau bba bbb bbe bbg bbn bbo bbr bbs bbt bbu be- bea beb bee beg ben beo ber bes bet beu bga bgb bge bgg bgn bgo bgr bgs bgt bgu bna bnb bne bng bnn bno bnr bns bnt bnu boa bob boe bog bon boo bor bos bot bou bra brb bre brg brn bro brr brs brt bru bsa bsb bse bsg bsn bso bsr bss bst bsu bta btb bte btg btn bto btr bts btt btu bua bub bue bug bun buo bur bus but buu eaa eab eae eag ean eao ear eas eat eau eba ebb ebe ebg ebn ebo ebr ebs ebt ebu eea eeb eee eeg een eeo eer ees eet ega egb ege egg egn ego egr egs egt egu en- ena enb ene eng enn eno enr ens ent enu eo- eoa eob eoe eog eon eoo eor eos eot eou era erb ere erg ern ero err ers ert eru es- esa esb ese esg esn eso esr ess est esu eta etb ete etg etn eto etr ets ett etu eu- eua eub eue eug eun eur eus eut gaa gab gae gag gan gao gar gas gat gau gba gbe gbg gbn gbo gbr gbs gbt gbu ge- gea geb gee geg gen geo ger ges get geu gga ggb ggg ggn ggo ggr ggs ggt ggu gna gnb gne gnn gno gnr gns gnt gnu goa gob goe gog gon goo gor gos got gou gra grb gre grg grn gro grr grs grt gru gsa gsb gse gsg gsn gso gsr gss gst gsu gta gtb gte gtg gtn gto gtr gts gtt gtu gu- gua gub gue gug gun guo gur gus gut guu naa nab nae nag nan nao nar nas nat nau nba nbb nbe nbg nbn nbo nbr nbs nbt nbu ne- nea neb nee neg nen neo ner nes net neu nga ngb nge ngg ngn ngo ngs ngt ngu nna nnb nne nng nnn nno nns nnt nnu no- noa nob noe nog non noo nor nos not nou nra nrb nre nrg nrn nro nrr nrs nrt nru nsa nsb nse nsg nsn nso nsr nss nst nsu nta ntb nte ntg ntn nto ntr nts ntt ntu nua nub nue nug nun nuo nur nus nut nuu oaa oab oae oag oan oao oar oas oat oau ob- oba obb obe obg obn obo obr obs obt obu oea oeb oee oeg oen oeo oer oes oet oga oge ogg ogn ogo ogs ogt on- ona onb one ong onn ono onr ons ont onu oo- ooa oob oog oon ooo oor oos oot or- ora orb ore org orn oro orr ors ort oru os- osa osb ose osg osn oso osr oss ost osu ot- ota otb ote otg otn oto otr ots ott otu ou- oua oue oun ouo our ous out ra- raa rab rae rag ran rao rar ras rat rau rba rbb rbe rbg rbn rbo rbr rbs rbt rbu re- rea reb ree reg ren reo rer res ret reu rga rgb rge rgg rgn rgo rgr rgs rgt rna rnb rng rnn rno rnr rns rnt rnu roa rob roe rog ron roo ror ros rot rou rra rrb rrg rrn rrr rrs rrt rru rsa rsb rse rsg rsn rso rsr rss rst rsu rta rtb rte rtg rtn rto rtr rts rtt rtu rua rub rue rug run ruo rur rus rut ruu saa sab sae sag san sao sar sas sat sau sba sbb sbe sbg sbn sbo sbr sbs sbt sbu se- sea seb see seg sen seo ser ses set seu sga sgb sge sgg sgn sgo sgr sgs sgt sgu sna snb sne sng snn sno snr sns snt snu soa sob soe sog son soo sor sos sot sou sr- sra srb sre srg srn sro srr srs srt ss- ssa ssb sse ssg ssn sso ssr sss sst ssu sta stb ste stg stn sto str sts stt stu sua sub sue sug sun suo sur sus sut suu taa tab tae tag tan tao tar tas tat tau tba tbb tbe tbg tbn tbo tbr tbs tbt tbu te- tea teb tee teg ten teo ter tes tet teu tga tgb tge tgg tgn tgo tgr tgs tgt tgu tna tnb tne tng tnn tno tnr tns tnt to- toa tob toe tog ton too tor tos tot tou tra trb tre trg trn tro trr trs trt tru tsa tsb tse tsg tsn tso tsr tss tst tsu tta ttb tte ttg ttn tto ttr tts ttt ttu tua tub tue tug tun tuo tur tus tut tuu ua- uaa uab uae uag uan uao uar uas uat uau uba ubb ube ubg ubn ubo ubr ubs ubt ubu uea ueb uee ueg uen uer ues uet uga ugb uge ugg ugn ugo ugr ugs ugt ugu un- una unb une ung unn uno unr uns unt unu uoa uob uoe uog uon uoo uor uos uot ur- ura urb ure urg urn uro urr urs urt uru usa usb use usg usn uso usr uss ust usu uta utb ute utn uto utr uts utt utu