-er bbb bbe bbi bbm bbo bbr bbs bbt be- beb bee bei bem beo ber bes bet bev bi- bib bie bii bim bio bir bis bit biv bmb bme bmi bmm bmo bmr bms bmt bmv bob boe boi bom boo bor bos bot bov brb bre bri brm bro brr brs brt brv bsb bse bsi bsm bso bsr bss bst bsv btb bte bti btm bto btr bts btt btv bvb bve bvi bvm bvo bvr bvs bvt bvv ebb ebe ebi ebm ebo ebr ebs ebt ebv eeb eee eem eeo eer ees eet eev eib eie eii eim eio eir eis eit eiv em- emb eme emi emm emo emr ems emt emv eo- eob eoe eoi eom eoo eor eos eot erb ere eri erm ero err ers ert erv es- esb ese esi esm eso esr ess est esv etb ete eti etm eto etr ets ett etv evb eve evi evm evo evr evs evt evv i-v ibb ibe ibi ibm ibo ibr ibs ibt ibv ie- iee iei iem ier ies iet iev iib iie iii iim iio iir iis iit im- imb ime imi imm imo ims imt imv io- iob ioe ioi iom ioo ior ios iot iov ir- irb ire iri irm iro irr irs irt irv is- isb ise isi ism iso isr iss ist isv itb ite iti itm ito its itt itv ivb ive ivi ivo ivr ivs ivt ivv m-o m-r m-v mbb mbe mbi mbm mbo mbr mbs mbt mbv meb mee mei mem meo mer mes met mev mi- mib mie mii mim mio mir mis mit miv mmb mme mmi mmm mmo mmr mms mmt mmv mob moe moi mom moo mor mos mot mov mrb mre mri mrm mro mrr mrs mrt mrv msb mse msi msm mso msr mss mst msv mtb mte mti mtm mto mtr mts mtt mtv mvb mve mvi mvm mvo mvr mvs mvt mvv o-i ob- obb obe obi obm obo obr obs obt obv oeb oee oei oem oeo oer oes oet oib oie oii oim oio oir ois oit oiv om- omb ome omi omm omo omr oms omt omv oo- oob ooi oom ooo oor oos oot oov or- orb ore ori orm oro orr ors ort orv os- osb ose osi osm oso osr oss ost osv ot- otb ote oti otm oto otr ots ott otv ov- ovb ove ovi ovo ovs ovv rbb rbe rbi rbm rbo rbr rbs rbt re- reb ree rei rem reo rer res ret rev rib rie rii rim rio rir ris rit riv rmb rme rmi rmm rmo rmr rms rmt rmv rob roe roi rom roo ror ros rot rov rrb rri rrm rrr rrs rrt rsb rse rsi rsm rso rsr rss rst rsv rtb rte rti rtm rto rtr rts rtt rtv rvb rve rvi rvm rvo rvr rvs rvt rvv sbb sbe sbi sbm sbo sbr sbs sbt sbv se- seb see sei sem seo ser ses set sev sib sie sii sim sio sir sis sit siv smb sme smi smm smo smr sms smt smv sob soe soi som soo sor sos sot sov sr- srb sre sri srm sro srr srs srt srv ss- ssb sse ssi ssm sso ssr sss sst ssv stb ste sti stm sto str sts stt stv svb sve svi svm svo svr svs svt svv tbb tbe tbi tbm tbo tbr tbs tbt tbv te- teb tee tei tem teo ter tes tet tev tib tie tii tim tio tir tis tit tiv tmb tme tmi tmm tmo tmr tms tmt tmv to- tob toe toi tom too tor tos tot tov trb tre tri trm tro trr trs trt trv tsb tse tsi tsm tso tsr tss tst tsv ttb tte tti ttm tto ttr tts ttt ttv tvb tve tvi tvm tvo tvr tvs tvt v-e vbi vbm vbo vbr vbs vbv veb vee vei vem veo ver ves vet vi- vib vie vii vim vio vir vis vit viv vm- vmi vmm vmo vmr vmt vob voe voi vom voo vor vos vot vov vrb vre vri vrm vrr vrs vrt vsb vse vsi vsm vso vsr vss vst vsv vtb vte vti vtm vto vtr vts vtt vtv vvb vvi vvm vvo vvr vvs vvt vvv