-er b-u bbb bbc bbd bbe bbm bbn bbo bbr bbs bbu bcb bcc bcd bce bcm bcn bco bcr bcs bcu bdb bdc bdd bde bdm bdo bdr bds bdu be- beb bec bed bee bem ben beo ber bes beu bmb bmc bmd bme bmm bmn bmo bmr bms bmu bnb bnc bnd bne bnn bno bnr bns bnu bob boc bod boe bom bon boo bor bos bou brb brd bre brm brn bro brr brs bru bsb bsc bsd bse bsm bsn bso bsr bss bsu bub buc bud bue bum bun buo bur bus buu c-- cbb cbc cbd cbe cbm cbn cbo cbr cbs cbu ccb ccc ccd cce ccm ccn cco ccr ccs ccu cdb cdc cdd cde cdm cdn cdo cdr cds cdu ce- ceb cec ced cee cem cen ceo cer ces ceu cmb cmc cmd cme cmm cmn cmo cmr cms cmu cn- cnb cnc cnd cne cnm cnn cno cnr cns cnu co- cob coc cod coe com con coo cor cos cou crb crc crd cre crm crn cro crr crs cru csb csc csd cse csm csn cso csr css csu cub cuc cud cue cum cun cuo cur cus cuu dbb dbc dbd dbe dbm dbn dbo dbr dbs dbu dcb dcc dcd dce dcm dcn dco dcr dcs dcu ddb ddc ddd dde ddm ddn ddo ddr dds ddu de- deb dec ded dee dem den deo der des deu dmb dmc dmd dme dmm dmn dmo dmr dms dmu dnb dnc dnd dne dnm dnn dno dnr dns dob doc dod doe dom don doo dor dos dou drb drc drd dre drm drn dro drr drs dru dsb dsc dsd dse dsm dsn dso dsr dss dsu dub duc dud due dum dun duo dur dus ebb ebc ebd ebe ebm ebn ebo ebr ebs ebu ec- ecb ecc ecd ece ecm ecn eco ecr ecs ecu ed- edb edc edd ede edm edn edo edr eds edu eeb eec eed eee eem een eeo eer ees em- emb emc emd eme emm emn emo emr ems emu en- enb enc end ene enm enn eno enr ens enu eo- eob eoc eod eoe eom eon eoo eor eos eou erb erc erd ere erm ern ero err ers eru es- esb esc esd ese esm esn eso esr ess esu eu- eub euc eud eue eun eur eus m-o m-r mbb mbc mbd mbe mbm mbo mbr mbs mbu mc- mcb mcc mcd mce mcm mcn mco mcr mcs mcu mdb mdc mdd mde mdm mdn mdo mdr mds mdu meb mec med mee mem men meo mer mes meu mmb mmc mmd mme mmm mmn mmo mmr mms mmu mnb mnc mne mnm mnn mno mnr mns mnu mob moc mod moe mom mon moo mor mos mou mrb mrc mrd mre mrm mrn mro mrr mrs mru msb msc msd mse msm msn mso msr mss msu mub muc mud mue mum mun mur mus muu nbb nbc nbd nbe nbm nbn nbo nbr nbs nbu ncb ncc ncd nce ncm ncn nco ncr ncs ncu ndb ndc ndd nde ndm ndn ndo ndr nds ndu ne- neb nec ned nee nem nen neo ner nes neu nmb nmc nmd nme nmm nmn nmo nmr nms nmu nnb nnc nne nnm nnn nno nns nnu no- nob noc nod noe nom non noo nor nos nou nrb nrc nrd nre nrm nrn nro nrr nrs nru nsb nsc nsd nse nsm nsn nso nsr nss nsu nub nuc nud nue num nun nuo nur nus nuu ob- obb obc obd obe obm obn obo obr obs obu oc- ocb occ ocd ocm ocn oco ocr ocs ocu odb odc odd ode odm odn odo odr ods odu oeb oec oed oee oem oen oeo oer oes om- omb omc omd ome omm omn omo omr oms omu on- onb onc ond one onn ono onr ons onu oo- oob ooc ood oom oon ooo oor oos or- orb orc ord ore orm orn oro orr ors oru os- osb osc osd ose osm osn oso osr oss osu ou- ouc oud oue oum oun ouo our ous rbb rbc rbd rbe rbm rbn rbo rbr rbs rbu rcb rcc rcd rce rcm rcn rco rcr rcs rcu rdb rdc rdd rde rdm rdn rdo rdr rds rdu re- reb rec red ree rem ren reo rer res reu rmb rmc rmd rme rmm rmn rmo rmr rms rnb rnc rnd rnm rnn rno rnr rns rnu rob roc rod roe rom ron roo ror ros rou rrb rrc rrd rrm rrn rrr rrs rru rsb rsc rsd rse rsm rsn rso rsr rss rsu rub ruc rud rue rum run ruo rur rus ruu sbb sbc sbd sbe sbm sbn sbo sbr sbs sbu scb scc scd sce scm scn sco scr scs scu sdb sdc sdd sde sdm sdn sdo sdr sds sdu se- seb sec sed see sem sen seo ser ses seu smb smc smd sme smm smn smo smr sms smu snb snc snd sne snm snn sno snr sns snu sob soc sod soe som son soo sor sos sou sr- srb src srd sre srm srn sro srr srs ss- ssb ssc ssd sse ssm ssn sso ssr sss ssu sub suc sud sue sum sun suo sur sus suu ubb ubc ube ubn ubo ubr ubs ubu ucb ucc ucd uce ucm ucn uco ucr ucs ucu udb udc udd ude udm udn udo udr uds udu ueb uec ued uee uem uen uer ues um- umb umc umd ume umm umn umo umr ums umu un- unb unc und une unm unn uno unr uns unu uob uoc uod uoe uom uon uoo uor uos ur- urb urc urd ure urm urn uro urr urs uru usb usc usd use usm usn uso usr uss usu uuc uue uum uun uur uus