-er a-a a-b a-i aaa aab aad aae aai aak aam aan aar ab- aba abb abd abe abi abk abm abn abr ad- ada adb add ade adi adk adm adn adr aea aeb aed aee aei aek aem aen aer ai- aia aib aid aie aii aik aim ain air aka akb akd ake aki akk akm akn akr ama amb amd ame ami amk amm amn amr an- ana anb and ane ani ank anm ann anr ar- ara arb ard are ari ark arm arn arr baa bab bad bae bai bak bam ban bar bba bbb bbd bbe bbi bbk bbm bbn bbr bda bdb bdd bde bdi bdk bdm bdr be- bea beb bed bee bei bek bem ben ber bi- bia bib bid bie bii bik bim bin bir bka bkb bke bkk bkm bkn bkr bma bmb bmd bme bmi bmk bmm bmn bmr bna bnb bnd bne bni bnk bnn bnr bra brb brd bre bri brk brm brn brr daa dab dad dae dai dak dam dan dar dba dbb dbd dbe dbi dbk dbm dbn dbr dda ddb ddd dde ddi ddk ddm ddn ddr de- dea deb ded dee dei dek dem den der di- dia dib did die dii dik dim din dir dka dkb dke dki dkk dkm dkr dma dmb dmd dme dmi dmk dmm dmn dmr dna dnb dnd dne dni dnk dnm dnn dnr dra drb drd dre dri drk drm drn drr eaa eab ead eae eai eak eam ean ear eba ebb ebd ebe ebi ebk ebm ebn ebr ed- eda edb edd ede edi edk edm edn edr eea eeb eed eee eek eem een eer eia eib eid eie eii eik eim ein eir eka ekb ekd eke eki ekr em- ema emb emd eme emi emk emm emn emr en- ena enb end ene eni enk enm enn enr era erb erd ere eri erk erm ern err i-d ia- iaa iab iad iae iai iam ian iar iba ibb ibd ibe ibi ibk ibm ibn ibr ida idb idd ide idi idk idm idn idr ie- iea ied iee iei iek iem ien ier iia iib iid iie iii iim iin iir ika ikb ike iki ikk ikr im- ima imb imd ime imi imm imn in- ina inb ind ine ini ink inm inn inr ir- ira irb ird ire iri irk irm irn irr ka- kaa kab kad kae kai kak kam kan kar kba kbb kbd kbe kbi kbk kbm kbn kbr kda kdb kde kdk kdm kdr ke- kea keb ked kee kei kek kem ken ker kia kib kid kie kii kik kim kin kir kkb kke kki kkk kkm kkn kkr kma kmb kmd kme kmi kmk kmm kn- kna knd kne kni knk knm knn knr kra krd kri krk krn krr m-r maa mab mad mae mai mak mam man mar mba mbb mbd mbe mbi mbk mbm mbr mda mdb mdd mde mdi mdk mdm mdn mdr mea meb med mee mei mek mem men mer mi- mia mib mid mie mii mik mim min mir mka mkb mkd mke mkk mkm mkn mkr mma mmb mmd mme mmi mmk mmm mmn mmr mna mnb mne mni mnk mnm mnn mnr mra mrb mrd mre mri mrk mrm mrn mrr n-i naa nab nad nae nai nak nam nan nar nba nbb nbd nbe nbi nbk nbm nbn nbr nda ndb ndd nde ndi ndk ndm ndn ndr ne- nea neb ned nee nei nek nem nen ner nia nib nid nie nii nik nim nin nir nka nke nki nkk nkm nkn nkr nma nmb nmd nme nmi nmk nmm nmn nmr nna nnb nne nni nnk nnm nnn nra nrb nrd nre nri nrk nrm nrn nrr ra- raa rab rad rae rai rak ram ran rar rba rbb rbd rbe rbi rbk rbm rbn rbr rda rdb rdd rde rdi rdm rdn rdr re- rea reb red ree rei rek rem ren rer ria rib rid rie rii rik rim rin rir rkb rke rkk rkm rma rmb rmd rme rmi rmm rmn rmr rna rnb rnd rni rnm rnn rnr rra rrb rrd rri rrk rrm rrn rrr