-er b-u bbb bbc bbe bbm bbn bbr bbu bcb bcc bce bcm bcn bcr bcu bcv be- beb bec bee bem ben ber beu bev bmb bmc bme bmm bmn bmr bmu bmv bnb bnc bne bnn bnr bnu bnv brb bre brm brn brr bru brv bub buc bue bum bun bur buu bvb bvc bve bvm bvn bvr bvu bvv c-- cbb cbc cbe cbm cbn cbr cbu cbv ccb ccc cce ccm ccn ccr ccu ccv ce- ceb cec cee cem cen cer ceu cev cmb cmc cme cmm cmn cmr cmu cmv cn- cnb cnc cne cnm cnn cnr cnu cnv crb crc cre crm crn crr cru crv cub cuc cue cum cun cur cuu cuv cvb cvc cve cvm cvn cvr cvu cvv ebb ebc ebe ebm ebn ebr ebu ebv ec- ecb ecc ece ecm ecn ecr ecu ecv eeb eec eee eem een eer eev em- emb emc eme emm emn emr emu emv en- enb enc ene enm enn enr enu env erb erc ere erm ern err eru erv eu- eub euc eue eun eur euv evb evc eve evm evn evr evv m-r m-v mbb mbc mbe mbm mbr mbu mbv mc- mcb mcc mce mcm mcn mcr mcu mcv meb mec mee mem men mer meu mev mmb mmc mme mmm mmn mmr mmu mmv mnb mnc mne mnm mnn mnr mnu mrb mrc mre mrm mrn mrr mru mrv mub muc mue mum mun mur muu mvb mvc mve mvm mvn mvr mvv nbb nbc nbe nbm nbn nbr nbu nbv ncb ncc nce ncm ncn ncr ncu ncv ne- neb nec nee nem nen ner neu nev nmb nmc nme nmm nmn nmr nmu nnb nnc nne nnm nnn nnu nnv nrb nrc nre nrm nrn nrr nru nrv nub nuc nue num nun nur nuu nuv nvb nvc nve nvm nvn nvu nvv rbb rbc rbe rbm rbn rbr rbu rcb rcc rce rcm rcn rcr rcu rcv re- reb rec ree rem ren rer reu rev rmb rmc rme rmm rmn rmr rmv rnb rnc rnm rnn rnr rnu rnv rrb rrc rrm rrn rrr rru rub ruc rue rum run rur ruu ruv rvb rvc rve rvm rvn rvr rvu rvv ubb ubc ube ubn ubr ubu ubv ucb ucc uce ucm ucn ucr ucu ucv ueb uec uee uem uen uer um- umb umc ume umm umn umr umu un- unb unc une unm unn unr unu unv ur- urb urc ure urm urn urr uru uuc uue uum uun uur uuu uvb uvc uve uvm uvu uvv v-e vbc vbm vbr vbv vcc vce vcm vcn vcr vcu veb vec vee vem ven ver veu vm- vmc vmm vmn vmr vmu vn- vnm vnr vnu vnv vrb vrc vre vrm vrn vrr vru vue vum vur vuv vvb vvc vvm vvr vvv