-er -ic b-u bbb bbc bbe bbi bbm bbo bbr bbu bcb bcc bce bci bcm bco bcr bcu bcv be- beb bec bee bei bem beo ber beu bev bi- bib bic bie bii bim bio bir biu biv bmb bmc bme bmi bmm bmo bmr bmu bmv bob boc boe boi bom boo bor bou bov brb bre bri brm bro brr bru brv bub buc bue bui bum buo bur buu bvb bvc bve bvi bvm bvo bvr bvu bvv c-- cbb cbc cbe cbi cbm cbo cbr cbu cbv ccb ccc cce cci ccm cco ccr ccu ccv ce- ceb cec cee cei cem ceo cer ceu cev ci- cib cic cie cii cim cio cir ciu civ cmb cmc cme cmi cmm cmo cmr cmu cmv co- cob coc coe coi com coo cor cou cov crb crc cre cri crm cro crr cru crv cub cuc cue cui cum cuo cur cuu cuv cvb cvc cve cvi cvm cvo cvr cvu cvv ebb ebc ebe ebi ebm ebo ebr ebu ebv ec- ecb ecc ece eci ecm eco ecr ecu ecv eeb eec eee eem eeo eer eev eib eic eie eii eim eio eir eiu eiv em- emb emc eme emi emm emo emr emu emv eo- eob eoc eoe eoi eom eoo eor eou erb erc ere eri erm ero err eru erv eu- eub euc eue eui eur euv evb evc eve evi evm evo evr evv i-v ibb ibc ibe ibi ibm ibo ibr ibu ibv icb icc ice ici icm ico icr icu icv ie- iec iee iei iem ier iev iib iic iie iii iim iio iir iiu im- imb imc ime imi imm imo imu imv io- iob ioc ioe ioi iom ioo ior iou iov ir- irb irc ire iri irm iro irr iru irv iu- iub iuc iue iui ium iur ivb ivc ive ivi ivo ivr ivu ivv m-o m-r m-v mbb mbc mbe mbi mbm mbo mbr mbu mbv mc- mcb mcc mce mci mcm mco mcr mcu mcv meb mec mee mei mem meo mer meu mev mi- mib mic mie mii mim mio mir miu miv mmb mmc mme mmi mmm mmo mmr mmu mmv mob moc moe moi mom moo mor mou mov mrb mrc mre mri mrm mro mrr mru mrv mub muc mue mui mum mur muu mvb mvc mve mvi mvm mvo mvr mvv o-i ob- obb obc obe obi obm obo obr obu obv oc- ocb occ oci ocm oco ocr ocu ocv oeb oec oee oei oem oeo oer oib oic oie oii oim oio oir oiu oiv om- omb omc ome omi omm omo omr omu omv oo- oob ooc ooi oom ooo oor oov or- orb orc ore ori orm oro orr oru orv ou- ouc oue oui oum ouo our ov- ovb ovc ove ovi ovo ovv rbb rbc rbe rbi rbm rbo rbr rbu rcb rcc rce rci rcm rco rcr rcu rcv re- reb rec ree rei rem reo rer reu rev rib ric rie rii rim rio rir riv rmb rmc rme rmi rmm rmo rmr rmv rob roc roe roi rom roo ror rou rov rrb rrc rri rrm rrr rru rub ruc rue rui rum ruo rur ruu ruv rvb rvc rve rvi rvm rvo rvr rvu rvv ubb ubc ube ubi ubo ubr ubu ubv ucb ucc uce uci ucm uco ucr ucu ucv ueb uec uee uei uem uer uib uic uie uii uim uio uir uiu um- umb umc ume umi umm umo umr umu uob uoc uoe uom uoo uor ur- urb urc ure uri urm uro urr uru uuc uue uum uur uuu uvb uvc uve uvm uvo uvu uvv v-e vbc vbi vbm vbo vbr vbv vcc vce vci vcm vco vcr vcu veb vec vee vei vem veo ver veu vi- vib vic vie vii vim vio vir viu viv vm- vmc vmi vmm vmo vmr vmu vob voc voe voi vom voo vor vou vov vrb vrc vre vri vrm vrr vru vue vum vur vuv vvb vvc vvi vvm vvo vvr vvv