-er -ol b-u bbb bbc bbd bbe bbl bbm bbo bbr bbu bcb bcc bcd bce bcl bcm bco bcr bcu bdb bdc bdd bde bdl bdm bdo bdr bdu be- beb bec bed bee bel bem beo ber beu blb blc bld ble bll blm blo blr blu bmb bmc bmd bme bml bmm bmo bmr bmu bob boc bod boe bol bom boo bor bou brb brd bre brl brm bro brr bru bub buc bud bue bul bum buo bur buu c-- cbb cbc cbd cbe cbl cbm cbo cbr cbu ccb ccc ccd cce ccl ccm cco ccr ccu cdb cdc cdd cde cdl cdm cdo cdr cdu ce- ceb cec ced cee cel cem ceo cer ceu cl- clb clc cld cle cll clm clo clr clu cmb cmc cmd cme cml cmm cmo cmr cmu co- cob coc cod coe col com coo cor cou crb crc crd cre crl crm cro crr cru cub cuc cud cue cul cum cuo cur cuu dbb dbc dbd dbe dbl dbm dbo dbr dbu dcb dcc dcd dce dcl dcm dco dcr dcu ddb ddc ddd dde ddl ddm ddo ddr ddu de- deb dec ded dee del dem deo der deu dl- dlb dlc dld dle dll dlm dlo dlr dlu dmb dmc dmd dme dml dmm dmo dmr dmu dob doc dod doe dol dom doo dor dou drb drc drd dre drl drm dro drr dru dub duc dud due dul dum duo dur ebb ebc ebd ebe ebl ebm ebo ebr ebu ec- ecb ecc ecd ece ecl ecm eco ecr ecu ed- edb edc edd ede edl edm edo edr edu eeb eec eed eee eel eem eeo eer elb elc eld ele ell elm elo elr elu em- emb emc emd eme eml emm emo emr emu eo- eob eoc eod eoe eol eom eoo eor eou erb erc erd ere erl erm ero err eru eu- eub euc eud eue eul eur lbb lbc lbd lbe lbl lbm lbo lbr lbu lcb lcc lcd lce lcl lcm lco lcr lcu ldb ldc ldd lde ldl ldm ldo ldr ldu leb lec led lee lel lem leo ler leu llb llc lld lle lll llm llo llr llu lmb lmc lmd lme lml lmm lmo lmr lmu lob loc lod loe lol lom loo lor lou lrb lrc lrd lrm lro lrr lru lub luc lud lue lul lum luo lur luu m-o m-r mbb mbc mbd mbe mbl mbm mbo mbr mbu mc- mcb mcc mcd mce mcl mcm mco mcr mcu mdb mdc mdd mde mdl mdm mdo mdr mdu meb mec med mee mel mem meo mer meu mlb mlc mld mle mll mlm mlo mlr mlu mmb mmc mmd mme mml mmm mmo mmr mmu mob moc mod moe mol mom moo mor mou mrb mrc mrd mre mrl mrm mro mrr mru mub muc mud mue mul mum mur muu ob- obb obc obd obe obl obm obo obr obu oc- ocb occ ocd ocl ocm oco ocr ocu odb odc odd ode odl odm odo odr odu oeb oec oed oee oel oem oeo oer olb olc old ole oll olm olo olu om- omb omc omd ome oml omm omo omr omu oo- oob ooc ood ool oom ooo oor or- orb orc ord ore orl orm oro orr oru ou- ouc oud oue oul oum ouo our rbb rbc rbd rbe rbl rbm rbo rbr rbu rcb rcc rcd rce rcl rcm rco rcr rcu rdb rdc rdd rde rdl rdm rdo rdr rdu re- reb rec red ree rel rem reo rer reu rlc rld rle rll rlm rlo rlr rlu rmb rmc rmd rme rml rmm rmo rmr rob roc rod roe rol rom roo ror rou rrb rrc rrd rrl rrm rrr rru rub ruc rud rue rum ruo rur ruu ubb ubc ube ubl ubo ubr ubu ucb ucc ucd uce ucl ucm uco ucr ucu udb udc udd ude udl udm udo udr udu ueb uec ued uee uel uem uer ulb ulc uld ule ull ulm ulo ulr ulu um- umb umc umd ume uml umm umo umr umu uob uoc uod uoe uol uom uoo uor ur- urb urc urd ure url urm uro urr uru uuc uue uum uur uuu