-er a-a a-b a-i aaa aab aad aae aai aam aan aar ab- aba abb abd abe abi abm abn abr ad- ada adb add ade adi adm adn adr aea aeb aed aee aei aem aen aer ai- aia aib aid aie aii aim ain air ama amb amd ame ami amm amn amr an- ana anb and ane ani anm ann anr ar- ara arb ard are ari arm arn arr baa bab bad bae bai bam ban bar bba bbb bbd bbe bbi bbm bbn bbr bda bdb bdd bde bdi bdm bdr be- bea beb bed bee bei bem ben ber bi- bia bib bid bie bii bim bin bir bma bmb bmd bme bmi bmm bmn bmr bna bnb bnd bne bni bnn bnr bra brb brd bre bri brm brn brr daa dab dad dae dai dam dan dar dba dbb dbd dbe dbi dbm dbn dbr dda ddb ddd dde ddi ddm ddn ddr de- dea deb ded dee dei dem den der di- dia dib did die dii dim din dir dma dmb dmd dme dmi dmm dmn dmr dna dnb dnd dne dni dnm dnn dnr dra drb drd dre dri drm drn drr eaa eab ead eae eai eam ean ear eba ebb ebd ebe ebi ebm ebn ebr ed- eda edb edd ede edi edm edn edr eea eeb eed eee eem een eer eia eib eid eie eii eim ein eir em- ema emb emd eme emi emm emn emr en- ena enb end ene eni enm enn enr era erb erd ere eri erm ern err i-d ia- iaa iab iad iae iai iam ian iar iba ibb ibd ibe ibi ibm ibn ibr ida idb idd ide idi idm idn idr ie- iea ied iee iei iem ien ier iia iib iid iie iii iim iin iir im- ima imb imd ime imi imm imn in- ina inb ind ine ini inm inn inr ir- ira irb ird ire iri irm irn irr m-r maa mab mad mae mai mam man mar mba mbb mbd mbe mbi mbm mbr mda mdb mdd mde mdi mdm mdn mdr mea meb med mee mei mem men mer mi- mia mib mid mie mii mim min mir mma mmb mmd mme mmi mmm mmn mmr mna mnb mne mni mnm mnn mnr mra mrb mrd mre mri mrm mrn mrr n-i naa nab nad nae nai nam nan nar nba nbb nbd nbe nbi nbm nbn nbr nda ndb ndd nde ndi ndm ndn ndr ne- nea neb ned nee nei nem nen ner nia nib nid nie nii nim nin nir nma nmb nmd nme nmi nmm nmn nmr nna nnb nne nni nnm nnn nra nrb nrd nre nri nrm nrn nrr ra- raa rab rad rae rai ram ran rar rba rbb rbd rbe rbi rbm rbn rbr rda rdb rdd rde rdi rdm rdn rdr re- rea reb red ree rei rem ren rer ria rib rid rie rii rim rin rir rma rmb rmd rme rmi rmm rmn rmr rna rnb rnd rni rnm rnn rnr rra rrb rrd rri rrm rrn rrr