-er bbb bbe bbg bbi bbl bbm bbr bbt be- beb bee beg bei bel bem ber bet bgb bge bgg bgi bgl bgm bgr bgt bi- bib bie big bii bil bim bir bit blb ble blg bli bll blm blr blt bmb bme bmg bmi bml bmm bmr bmt brb bre brg bri brl brm brr brt btb bte btg bti btl btm btr btt ebb ebe ebg ebi ebl ebm ebr ebt eeb eee eeg eel eem eer eet egb ege egg egi egl egm egr egt eib eie eig eii eil eim eir eit elb ele elg eli ell elm elr elt em- emb eme emg emi eml emm emr emt erb ere erg eri erl erm err ert etb ete etg eti etl etm etr ett gbe gbg gbi gbl gbm gbr gbt ge- geb gee geg gei gel gem ger get ggb ggg ggi ggm ggr ggt gib gie gig gii gil gim gir git glb gle glg gli gll glm glr glt gmb gme gmg gmi gml gmm gmr gmt grb gre grg gri grl grm grr grt gtb gte gtg gti gtl gtm gtr gtt ibb ibe ibg ibi ibl ibm ibr ibt ie- iee ieg iei iel iem ier iet igb ige igg igi igl igm igr igt iib iie iii iil iim iir iit il- ilb ile ilg ili ill ilm ilr ilt im- imb ime img imi iml imm imt ir- irb ire irg iri irl irm irr irt itb ite itg iti itl itm itt lbb lbe lbg lbi lbl lbm lbr lbt leb lee leg lei lel lem ler let lgb lge lgg lgi lgl lgm lgr lgt lib lie lig lii lil lim lir lit llb lle llg lli lll llm llr llt lmb lme lmg lmi lml lmm lmr lmt lrb lrg lri lrm lrr lrt ltb lte ltg lti ltl ltm ltr ltt m-r mbb mbe mbg mbi mbl mbm mbr mbt meb mee meg mei mel mem mer met mgb mge mgi mgl mgm mgr mgt mi- mib mie mig mii mil mim mir mit mlb mle mlg mli mll mlm mlr mlt mmb mme mmg mmi mml mmm mmr mmt mrb mre mrg mri mrl mrm mrr mrt mtb mte mtg mti mtl mtm mtr mtt rbb rbe rbg rbi rbl rbm rbr rbt re- reb ree reg rei rel rem rer ret rgb rge rgg rgi rgr rgt rib rie rig rii ril rim rir rit rle rlg rli rll rlm rlr rlt rmb rme rmg rmi rml rmm rmr rmt rrb rrg rri rrl rrm rrr rrt rtb rte rtg rti rtl rtm rtr rtt tbb tbe tbg tbi tbl tbm tbr tbt te- teb tee teg tei tel tem ter tet tgb tge tgg tgi tgl tgm tgr tgt tib tie tig tii til tim tir tit tle tlg tli tll tlm tlr tlt tmb tme tmg tmi tml tmm tmr tmt trb tre trg tri trl trm trr trt ttb tte ttg tti ttl ttm ttr ttt