-er -ol bbb bbc bbe bbh bbl bbm bbo bbr bcb bcc bce bch bcl bcm bco bcr be- beb bec bee beh bel bem beo ber bhb bhc bhe bhh bhl bhm bho bhr blb blc ble blh bll blm blo blr bmb bmc bme bmh bml bmm bmo bmr bob boc boe boh bol bom boo bor brb bre brh brl brm bro brr c-- cbb cbc cbe cbh cbl cbm cbo cbr ccb ccc cce cch ccl ccm cco ccr ce- ceb cec cee ceh cel cem ceo cer ch- chb chc che chh chl chm cho chr cl- clb clc cle clh cll clm clo clr cmb cmc cme cmh cml cmm cmo cmr co- cob coc coe coh col com coo cor crb crc cre crh crl crm cro crr ebb ebc ebe ebh ebl ebm ebo ebr ec- ecb ecc ece ech ecl ecm eco ecr eeb eec eee eel eem eeo eer ehb ehc ehe ehh ehl ehm eho ehr elb elc ele elh ell elm elo elr em- emb emc eme emh eml emm emo emr eo- eob eoc eoe eoh eol eom eoo eor erb erc ere erh erl erm ero err hbb hbc hbe hbh hbl hbm hbo hbr hcb hcc hce hch hcl hcm hco hcr he- heb hec hee heh hel hem heo her hhb hhc hhe hhh hhl hhm hho hhr hlb hlc hle hlh hll hlm hlo hlr hmb hmc hme hmh hml hmm hmo hmr hob hoc hoe hoh hol hom hoo hor hr- hrb hrc hre hrh hrl hrm hro hrr lbb lbc lbe lbh lbl lbm lbo lbr lcb lcc lce lch lcl lcm lco lcr leb lec lee leh lel lem leo ler lhb lhc lhh lho lhr llb llc lle lll llm llo llr lmb lmc lme lmh lml lmm lmo lmr lob loc loe loh lol lom loo lor lrb lrc lrh lrm lro lrr m-o m-r mbb mbc mbe mbh mbl mbm mbo mbr mc- mcb mcc mce mch mcl mcm mco mcr meb mec mee meh mel mem meo mer mhc mhh mhl mhm mho mhr mlb mlc mle mlh mll mlm mlo mlr mmb mmc mme mmh mml mmm mmo mmr mob moc moe moh mol mom moo mor mrb mrc mre mrh mrl mrm mro mrr ob- obb obc obe obh obl obm obo obr oc- ocb occ och ocl ocm oco ocr oeb oec oee oeh oel oem oeo oer ohc ohe ohh ohl ohm oho ohr olb olc ole oll olm olo om- omb omc ome omh oml omm omo omr oo- oob ooc ooh ool oom ooo oor or- orb orc ore orh orl orm oro orr rbb rbc rbe rbh rbl rbm rbo rbr rcb rcc rce rch rcl rcm rco rcr re- reb rec ree reh rel rem reo rer rh- rhb rhc rhe rhh rhl rhm rho rhr rlc rle rlh rll rlm rlo rlr rmb rmc rme rmh rml rmm rmo rmr rob roc roe roh rol rom roo ror rrb rrc rrh rrl rrm rrr