-er b-u bbb bbe bbi bbl bbm bbr bbt bbu be- beb bee bei bel bem ber bet beu bev bi- bib bie bii bil bim bir bit biu biv blb ble bli bll blm blr blt blu blv bmb bme bmi bml bmm bmr bmt bmu bmv brb bre bri brl brm brr brt bru brv btb bte bti btl btm btr btt btu btv bub bue bui bul bum bur but buu bvb bve bvi bvl bvm bvr bvt bvu bvv ebb ebe ebi ebl ebm ebr ebt ebu ebv eeb eee eel eem eer eet eev eib eie eii eil eim eir eit eiu eiv elb ele eli ell elm elr elt elu elv em- emb eme emi eml emm emr emt emu emv erb ere eri erl erm err ert eru erv etb ete eti etl etm etr ett etu etv eu- eub eue eui eul eur eut euv evb eve evi evl evm evr evt evv i-v ibb ibe ibi ibl ibm ibr ibt ibu ibv ie- iee iei iel iem ier iet iev iib iie iii iil iim iir iit iiu il- ilb ile ili ill ilm ilr ilt ilu ilv im- imb ime imi iml imm imt imu imv ir- irb ire iri irl irm irr irt iru irv itb ite iti itl itm itt itu itv iu- iub iue iui ium iur iut ivb ive ivi ivl ivr ivt ivu ivv lbb lbe lbi lbl lbm lbr lbt lbu lbv leb lee lei lel lem ler let leu lev lib lie lii lil lim lir lit liu liv llb lle lli lll llm llr llt llu llv lmb lme lmi lml lmm lmr lmt lmu lmv lrb lri lrm lrr lrt lru lrv ltb lte lti ltl ltm ltr ltt ltu ltv lub lue lui lul lum lur lut luu luv lvb lve lvi lvl lvm lvr lvt lvv m-r m-v mbb mbe mbi mbl mbm mbr mbt mbu mbv meb mee mei mel mem mer met meu mev mi- mib mie mii mil mim mir mit miu miv mlb mle mli mll mlm mlr mlt mlu mlv mmb mme mmi mml mmm mmr mmt mmu mmv mrb mre mri mrl mrm mrr mrt mru mrv mtb mte mti mtl mtm mtr mtt mtu mtv mub mue mui mul mum mur mut muu mvb mve mvi mvl mvm mvr mvt mvv rbb rbe rbi rbl rbm rbr rbt rbu re- reb ree rei rel rem rer ret reu rev rib rie rii ril rim rir rit riv rle rli rll rlm rlr rlt rlu rmb rme rmi rml rmm rmr rmt rmv rrb rri rrl rrm rrr rrt rru rtb rte rti rtl rtm rtr rtt rtu rtv rub rue rui rum rur rut ruu ruv rvb rve rvi rvl rvm rvr rvt rvu rvv tbb tbe tbi tbl tbm tbr tbt tbu tbv te- teb tee tei tel tem ter tet teu tev tib tie tii til tim tir tit tiu tiv tle tli tll tlm tlr tlt tlu tlv tmb tme tmi tml tmm tmr tmt tmu tmv trb tre tri trl trm trr trt tru trv ttb tte tti ttl ttm ttr ttt ttu ttv tub tue tui tul tum tur tut tuu tuv tvb tve tvi tvl tvm tvr tvt tvu ubb ube ubi ubl ubr ubt ubu ubv ueb uee uei uel uem uer uet uib uie uii uil uim uir uit uiu ulb ule uli ull ulm ulr ult ulu ulv um- umb ume umi uml umm umr umt umu ur- urb ure uri url urm urr urt uru utb ute uti utl utm utr utt utu utv uue uum uur uut uuu uvb uve uvl uvm uvu uvv v-e vbi vbl vbm vbr vbv veb vee vei vel vem ver vet veu vi- vib vie vii vil vim vir vit viu viv vl- vlb vle vll vlm vlt vlv vm- vmi vmm vmr vmt vmu vrb vre vri vrm vrr vrt vru vtb vte vti vtl vtm vtr vtt vtu vtv vue vul vum vur vut vuv vvb vvi vvm vvr vvt vvv