-er a-a a-b aaa aab aad aae aam aar aav ab- aba abb abd abe abm abr abv ad- ada adb add ade adm adr adv aea aeb aed aee aem aer aev ama amb amd ame amm amr amv ar- ara arb ard are arm arr arv av- ava avb avd ave avm avr baa bab bad bae bam bar bav bba bbb bbd bbe bbm bbr bda bdb bdd bde bdm bdr bdv be- bea beb bed bee bem ber bev bma bmb bmd bme bmm bmr bmv bra brb brd bre brm brr brv bva bvb bvd bve bvm bvr bvv daa dab dad dae dam dar dav dba dbb dbd dbe dbm dbr dbv dda ddb ddd dde ddm ddr de- dea deb ded dee dem der dev dma dmb dmd dme dmm dmr dmv dra drb drd dre drm drr drv dva dvb dvd dve dvm dvr eaa eab ead eae eam ear eav eba ebb ebd ebe ebm ebr ebv ed- eda edb edd ede edm edr eea eeb eed eee eem eer eev em- ema emb emd eme emm emr emv era erb erd ere erm err erv eva evb evd eve evm evr evv m-r m-v maa mab mad mae mam mar mav mba mbb mbd mbe mbm mbr mbv mda mdb mdd mde mdm mdr mdv mea meb med mee mem mer mev mma mmb mmd mme mmm mmr mmv mra mrb mrd mre mrm mrr mrv mva mvb mvd mve mvm mvr mvv ra- raa rab rad rae ram rar rav rba rbb rbd rbe rbm rbr rda rdb rdd rde rdm rdr rdv re- rea reb red ree rem rer rev rma rmb rmd rme rmm rmr rmv rra rrb rrd rrm rrr rva rvb rvd rve rvm rvr rvv v-a v-e vaa vab vad vae vam var vav vba vbd vbm vbr vbv vdb vdd vde vdm vdr vdv vea veb ved vee vem ver vm- vma vmd vmm vmr vra vrb vrd vre vrm vrr vva vvb vvm vvr vvv