-er b-u bbb bbe bbg bbi bbl bbr bbu be- beb bee beg bei bel ber beu bev bgb bge bgg bgi bgl bgr bgu bgv bi- bib bie big bii bil bir biu biv blb ble blg bli bll blr blu blv brb bre brg bri brl brr bru brv bub bue bug bui bul bur buu bvb bve bvg bvi bvl bvr bvu bvv ebb ebe ebg ebi ebl ebr ebu ebv eeb eee eeg eel eer eev egb ege egg egi egl egr egu eib eie eig eii eil eir eiu eiv elb ele elg eli ell elr elu elv erb ere erg eri erl err eru erv eu- eub eue eug eui eul eur euv evb eve evg evi evl evr evv gbe gbg gbi gbl gbr gbu gbv ge- geb gee geg gei gel ger geu gev ggb ggg ggi ggr ggu ggv gib gie gig gii gil gir giu giv glb gle glg gli gll glr glu glv grb gre grg gri grl grr gru grv gu- gub gue gug gui gul gur guu guv gvb gve gvg gvi gvl gvr gvu i-v ibb ibe ibg ibi ibl ibr ibu ibv ie- iee ieg iei iel ier iev igb ige igg igi igl igr igu iib iie iii iil iir iiu il- ilb ile ilg ili ill ilr ilu ilv ir- irb ire irg iri irl irr iru irv iu- iub iue iug iui iur ivb ive ivg ivi ivl ivr ivu ivv lbb lbe lbg lbi lbl lbr lbu lbv leb lee leg lei lel ler leu lev lgb lge lgg lgi lgl lgr lgu lgv lib lie lig lii lil lir liu liv llb lle llg lli lll llr llu llv lrb lrg lri lrr lru lrv lub lue lug lui lul lur luu luv lvb lve lvg lvi lvl lvr lvv rbb rbe rbg rbi rbl rbr rbu re- reb ree reg rei rel rer reu rev rgb rge rgg rgi rgr rgv rib rie rig rii ril rir riv rle rlg rli rll rlr rlu rrb rrg rri rrl rrr rru rub rue rug rui rur ruu ruv rvb rve rvg rvi rvl rvr rvu rvv ubb ube ubg ubi ubl ubr ubu ubv ueb uee ueg uei uel uer ugb uge ugg ugi ugl ugr ugu uib uie uig uii uil uir uiu ulb ule ulg uli ull ulr ulu ulv ur- urb ure urg uri url urr uru uue uug uur uuu uvb uve uvl uvu uvv v-e vbg vbi vbl vbr vbv veb vee veg vei vel ver veu vgg vgl vgr vgu vi- vib vie vig vii vil vir viu viv vl- vlb vle vll vlv vrb vre vrg vri vrr vru vue vug vul vur vuv vvb vvg vvi vvr vvv