-er a-a a-b aaa aab aad aae aah aan aar aas ab- aba abb abd abe abh abn abr abs ad- ada adb add ade adh adn adr ads aea aeb aed aee aeh aen aer aes aha ahb ahd ahe ahh ahn ahr ahs an- ana anb and ane anh ann anr ans ar- ara arb ard are arh arn arr ars as- asa asb asd ase ash asn asr ass baa bab bad bae bah ban bar bas bba bbb bbd bbe bbh bbn bbr bbs bda bdb bdd bde bdh bdr bds be- bea beb bed bee beh ben ber bes bha bhb bhd bhe bhh bhr bhs bna bnb bnd bne bnn bnr bns bra brb brd bre brh brn brr brs bsa bsb bsd bse bsh bsn bsr bss daa dab dad dae dah dan dar das dba dbb dbd dbe dbh dbn dbr dbs dda ddb ddd dde ddh ddn ddr dds de- dea deb ded dee deh den der des dh- dha dhb dhd dhe dhh dhr dhs dna dnb dnd dne dnh dnn dnr dns dra drb drd dre drn drr drs dsa dsb dsd dse dsh dsn dsr dss eaa eab ead eae eah ean ear eas eba ebb ebd ebe ebh ebn ebr ebs ed- eda edb edd ede edh edn edr eds eea eeb eed eee een eer ees eha ehb ehd ehe ehh ehn ehr ehs en- ena enb end ene enh enn enr ens era erb erd ere erh ern err ers es- esa esb esd ese esh esn esr ess haa hab had hae hah han har has hba hbb hbd hbe hbh hbn hbr hbs hda hdb hdd hde hdh hdn hdr hds he- hea heb hed hee heh hen her hes hha hhb hhd hhe hhh hhn hhr hhs hna hnb hnd hne hnh hnn hns hr- hra hrb hrd hre hrh hrn hrr hrs hsa hsb hsd hse hsh hsn hsr hss naa nab nad nae nah nan nar nas nba nbb nbd nbe nbn nbr nbs nda ndb ndd nde ndh ndn ndr nds ne- nea neb ned nee neh nen ner nes nha nhb nhd nhe nhh nhn nhr nhs nna nnb nne nnh nnn nns nra nrb nrd nre nrn nrr nrs nsa nsb nsd nse nsh nsn nsr nss ra- raa rab rad rae rah ran rar ras rba rbb rbd rbe rbh rbn rbr rbs rda rdb rdd rde rdh rdn rdr rds re- rea reb red ree reh ren rer res rh- rha rhb rhd rhe rhh rhn rhr rhs rna rnb rnd rnh rnn rnr rns rra rrb rrd rrh rrn rrr rrs rsa rsb rsd rse rsh rsn rsr rss saa sab sad sae sah san sar sas sba sbb sbd sbe sbh sbn sbr sbs sda sdb sdd sde sdh sdn sdr sds se- sea seb sed see seh sen ser ses sh- sha shb shd she shh shn shr shs sna snb snd sne snn snr sns sr- sra srb srd sre srh srn srr srs ss- ssa ssb ssd sse ssh ssn ssr sss