-er a-a a-b aaa aab aad aae aah aam aan aar ab- aba abb abd abe abh abm abn abr ad- ada adb add ade adh adm adn adr aea aeb aed aee aeh aem aen aer aha ahb ahd ahe ahh ahm ahn ahr ama amb amd ame amh amm amn amr an- ana anb and ane anh anm ann anr ar- ara arb ard are arh arm arn arr baa bab bad bae bah bam ban bar bba bbb bbd bbe bbh bbm bbn bbr bda bdb bdd bde bdh bdm bdr be- bea beb bed bee beh bem ben ber bha bhb bhd bhe bhh bhm bhr bma bmb bmd bme bmh bmm bmn bmr bna bnb bnd bne bnn bnr bra brb brd bre brh brm brn brr daa dab dad dae dah dam dan dar dba dbb dbd dbe dbh dbm dbn dbr dda ddb ddd dde ddh ddm ddn ddr de- dea deb ded dee deh dem den der dh- dha dhb dhd dhe dhh dhm dhr dma dmb dmd dme dmh dmm dmn dmr dna dnb dnd dne dnh dnm dnn dnr dra drb drd dre drm drn drr eaa eab ead eae eah eam ean ear eba ebb ebd ebe ebh ebm ebn ebr ed- eda edb edd ede edh edm edn edr eea eeb eed eee eem een eer eha ehb ehd ehe ehh ehm ehn ehr em- ema emb emd eme emh emm emn emr en- ena enb end ene enh enm enn enr era erb erd ere erh erm ern err haa hab had hae hah ham han har hba hbb hbd hbe hbh hbm hbn hbr hda hdb hdd hde hdh hdm hdn hdr he- hea heb hed hee heh hem hen her hha hhb hhd hhe hhh hhm hhn hhr hma hmb hmd hme hmh hmm hmr hna hnb hnd hne hnh hnn hr- hra hrb hrd hre hrh hrm hrn hrr m-r maa mab mad mae mah mam man mar mba mbb mbd mbe mbh mbm mbr mda mdb mdd mde mdh mdm mdn mdr mea meb med mee meh mem men mer mha mhd mhh mhm mhn mhr mma mmb mmd mme mmh mmm mmn mmr mna mnb mne mnm mnn mnr mra mrb mrd mre mrh mrm mrn mrr naa nab nad nae nah nam nan nar nba nbb nbd nbe nbm nbn nbr nda ndb ndd nde ndh ndm ndn ndr ne- nea neb ned nee neh nem nen ner nha nhb nhd nhe nhh nhm nhn nhr nma nmb nmd nme nmh nmm nmn nmr nna nnb nne nnh nnm nnn nra nrb nrd nre nrm nrn nrr ra- raa rab rad rae rah ram ran rar rba rbb rbd rbe rbh rbm rbn rbr rda rdb rdd rde rdh rdm rdn rdr re- rea reb red ree reh rem ren rer rh- rha rhb rhd rhe rhh rhm rhn rhr rma rmb rmd rme rmh rmm rmn rmr rna rnb rnd rnh rnm rnn rnr rra rrb rrd rrh rrm rrn rrr