-er b-u bbb bbe bbi bbm bbo bbr bbt bbu bbx be- beb bee bei bem beo ber bet beu bex bi- bib bie bii bim bio bir bit biu bix bmb bme bmi bmm bmo bmr bmt bmu bmx bob boe boi bom boo bor bot bou box brb bre bri brm bro brr brt bru brx btb bte bti btm bto btr btt btu btx bub bue bui bum buo bur but buu bux bxb bxi bxm bxo bxx ebb ebe ebi ebm ebo ebr ebt ebu ebx eeb eee eem eeo eer eet eex eib eie eii eim eio eir eit eiu eix em- emb eme emi emm emo emr emt emu emx eo- eob eoe eoi eom eoo eor eot eou erb ere eri erm ero err ert eru etb ete eti etm eto etr ett etu etx eu- eub eue eui eur eut eux ex- exe exi exo exr ext exu exx ibb ibe ibi ibm ibo ibr ibt ibu ibx ie- iee iei iem ier iet iex iib iie iii iim iio iir iit iiu iix im- imb ime imi imm imo imt imu imx io- iob ioe ioi iom ioo ior iot iou ir- irb ire iri irm iro irr irt iru irx itb ite iti itm ito itt itu itx iu- iub iue iui ium iur iut ixe ixi m-o m-r mbb mbe mbi mbm mbo mbr mbt mbu mbx meb mee mei mem meo mer met meu mex mi- mib mie mii mim mio mir mit miu mix mmb mme mmi mmm mmo mmr mmt mmu mmx mob moe moi mom moo mor mot mou mox mrb mre mri mrm mro mrr mrt mru mrx mtb mte mti mtm mto mtr mtt mtu mtx mub mue mui mum mur mut muu mux mxi mxr mxu o-i ob- obb obe obi obm obo obr obt obu obx oeb oee oei oem oeo oer oet oex oib oie oii oim oio oir oit oiu om- omb ome omi omm omo omr omt omu omx oo- oob ooi oom ooo oor oot oox or- orb ore ori orm oro orr ort oru orx ot- otb ote oti otm oto otr ott otu ou- oue oui oum ouo our out ox- oxb oxi oxo oxt oxx rbb rbe rbi rbm rbo rbr rbt rbu rbx re- reb ree rei rem reo rer ret reu rex rib rie rii rim rio rir rit rix rmb rme rmi rmm rmo rmr rmt rmx rob roe roi rom roo ror rot rou rox rrb rri rrm rrr rrt rru rtb rte rti rtm rto rtr rtt rtu rtx rub rue rui rum ruo rur rut ruu rux rxr t-x tbb tbe tbi tbm tbo tbr tbt tbu te- teb tee tei tem teo ter tet teu tex tib tie tii tim tio tir tit tiu tix tmb tme tmi tmm tmo tmr tmt tmu tmx to- tob toe toi tom too tor tot tou tox trb tre tri trm tro trr trt tru trx ttb tte tti ttm tto ttr ttt ttu ttx tub tue tui tum tuo tur tut tuu tux txe txi txt txu ubb ube ubi ubo ubr ubt ubu ubx ueb uee uei uem uer uet uib uie uii uim uio uir uit uiu um- umb ume umi umm umo umr umt umu uob uoe uom uoo uor uot uox ur- urb ure uri urm uro urr urt uru urx utb ute uti utm uto utr utt utu utx uue uum uur uut uuu uxb uxo uxr uxt uxu xbe xbr xbx xee xem xer xet xeu xex xie xii xio xit xiu xix xmi xmm xmo xmr xmt xmu xmx xoi xom xoo xor xot xox xrt xrx xti xtm xtr xtx xue xui xxi xxo xxx