-er bbb bbe bbi bbm bbo bbr bbt be- beb bee bei bem beo ber bet bi- bib bie bii bim bio bir bit bmb bme bmi bmm bmo bmr bmt bob boe boi bom boo bor bot brb bre bri brm bro brr brt btb bte bti btm bto btr btt ebb ebe ebi ebm ebo ebr ebt eeb eee eem eeo eer eet eib eie eii eim eio eir eit em- emb eme emi emm emo emr emt eo- eob eoe eoi eom eoo eor eot erb ere eri erm ero err ert etb ete eti etm eto etr ett ibb ibe ibi ibm ibo ibr ibt ie- iee iei iem ier iet iib iie iii iim iio iir iit im- imb ime imi imm imo imt io- iob ioe ioi iom ioo ior iot ir- irb ire iri irm iro irr irt itb ite iti itm ito itt m-o m-r mbb mbe mbi mbm mbo mbr mbt meb mee mei mem meo mer met mi- mib mie mii mim mio mir mit mmb mme mmi mmm mmo mmr mmt mob moe moi mom moo mor mot mrb mre mri mrm mro mrr mrt mtb mte mti mtm mto mtr mtt o-i ob- obb obe obi obm obo obr obt oeb oee oei oem oeo oer oet oib oie oii oim oio oir oit om- omb ome omi omm omo omr omt oo- oob ooi oom ooo oor oot or- orb ore ori orm oro orr ort ot- otb ote oti otm oto otr ott rbb rbe rbi rbm rbo rbr rbt re- reb ree rei rem reo rer ret rib rie rii rim rio rir rit rmb rme rmi rmm rmo rmr rmt rob roe roi rom roo ror rot rrb rri rrm rrr rrt rtb rte rti rtm rto rtr rtt tbb tbe tbi tbm tbo tbr tbt te- teb tee tei tem teo ter tet tib tie tii tim tio tir tit tmb tme tmi tmm tmo tmr tmt to- tob toe toi tom too tor tot trb tre tri trm tro trr trt ttb tte tti ttm tto ttr ttt