-er -ol bbb bbe bbh bbl bbm bbo bbr bbx be- beb bee beh bel bem beo ber bex bhb bhe bhh bhl bhm bho bhr bhx blb ble blh bll blm blo blr blx bmb bme bmh bml bmm bmo bmr bmx bob boe boh bol bom boo bor box brb bre brh brl brm bro brr brx bxb bxl bxm bxo bxx ebb ebe ebh ebl ebm ebo ebr ebx eeb eee eel eem eeo eer eex ehb ehe ehh ehl ehm eho ehr elb ele elh ell elm elo elr elx em- emb eme emh eml emm emo emr emx eo- eob eoe eoh eol eom eoo eor erb ere erh erl erm ero err ex- exe exh exl exo exr exx hbb hbe hbh hbl hbm hbo hbr hbx he- heb hee heh hel hem heo her hex hhb hhe hhh hhl hhm hho hhr hlb hle hlh hll hlm hlo hlr hlx hmb hme hmh hml hmm hmo hmr hmx hob hoe hoh hol hom hoo hor hox hr- hrb hre hrh hrl hrm hro hrr hxl hxm lbb lbe lbh lbl lbm lbo lbr lbx leb lee leh lel lem leo ler lex lhb lhh lho lhr lhx llb lle lll llm llo llr lmb lme lmh lml lmm lmo lmr lob loe loh lol lom loo lor lox lrb lrh lrm lro lrr lxo lxr lxx m-o m-r mbb mbe mbh mbl mbm mbo mbr mbx meb mee meh mel mem meo mer mex mhh mhl mhm mho mhr mhx mlb mle mlh mll mlm mlo mlr mlx mmb mme mmh mml mmm mmo mmr mmx mob moe moh mol mom moo mor mox mrb mre mrh mrl mrm mro mrr mrx mxl mxr ob- obb obe obh obl obm obo obr obx oeb oee oeh oel oem oeo oer oex ohe ohh ohl ohm oho ohr olb ole oll olm olo om- omb ome omh oml omm omo omr omx oo- oob ooh ool oom ooo oor oox or- orb ore orh orl orm oro orr orx ox- oxb oxo oxx rbb rbe rbh rbl rbm rbo rbr rbx re- reb ree reh rel rem reo rer rex rh- rhb rhe rhh rhl rhm rho rhr rle rlh rll rlm rlo rlr rmb rme rmh rml rmm rmo rmr rmx rob roe roh rol rom roo ror rox rrb rrh rrl rrm rrr rxr xbe xbl xbr xbx xee xel xem xer xex xlb xlm xlr xmh xml xmm xmo xmr xmx xom xoo xor xox xrx xxl xxo xxx