-er b-p bbb bbe bbi bbl bbp bbr bbt be- beb bee bei bel bep ber bet bev bi- bib bie bii bil bip bir bit biv blb ble bli bll blp blr blt blv bpb bpe bpi bpl bpp bpr bpt bpv brb bre bri brl brp brr brt brv btb bte bti btl btp btr btt btv bvb bve bvi bvl bvp bvr bvt bvv ebb ebe ebi ebl ebp ebr ebt ebv eeb eee eel eep eer eet eev eib eie eii eil eip eir eit eiv elb ele eli ell elp elr elt elv ep- epb epe epi epl epp epr ept erb ere eri erl erp err ert erv etb ete eti etl etp etr ett etv evb eve evi evl evp evr evt evv i-v ibb ibe ibi ibl ibp ibr ibt ibv ie- iee iei iel iep ier iet iev iib iie iii iil iip iir iit il- ilb ile ili ill ilp ilr ilt ilv ipb ipe ipi ipl ipp ipr ipt ipv ir- irb ire iri irl irp irr irt irv itb ite iti itl itp itt itv ivb ive ivi ivl ivp ivr ivt ivv l-p lbb lbe lbi lbl lbp lbr lbt lbv leb lee lei lel lep ler let lev lib lie lii lil lip lir lit liv llb lle lli lll llp llr llt llv lpb lpe lpi lpl lpp lpr lpt lpv lrb lri lrp lrr lrt lrv ltb lte lti ltl ltp ltr ltt ltv lvb lve lvi lvl lvp lvr lvt lvv p-p pbb pbe pbi pbl pbp pbr pbt peb pee pei pel pep per pet pev pib pie pii pil pip pir pit piv plb ple pli pll plp plr plt plv ppb ppe ppi ppl ppp ppr ppt ppv prb pre pri prl prp prr prt prv pt- ptb pte pti ptl ptp ptr ptt ptv pvb pve pvi pvl pvp pvr pvt pvv rbb rbe rbi rbl rbp rbr rbt re- reb ree rei rel rep rer ret rev rib rie rii ril rip rir rit riv rle rli rll rlp rlr rlt rpb rpe rpi rpl rpp rpr rpt rpv rrb rri rrl rrp rrr rrt rtb rte rti rtl rtp rtr rtt rtv rvb rve rvi rvl rvp rvr rvt rvv tbb tbe tbi tbl tbp tbr tbt tbv te- teb tee tei tel tep ter tet tev tib tie tii til tip tir tit tiv tle tli tll tlp tlr tlt tlv tpb tpe tpi tpl tpp tpr tpt tpv trb tre tri trl trp trr trt trv ttb tte tti ttl ttp ttr ttt ttv tvb tve tvi tvl tvp tvr tvt v-e vbi vbl vbr vbv veb vee vei vel vep ver vet vi- vib vie vii vil vip vir vit viv vl- vlb vle vll vlp vlt vlv vpb vpe vpi vpl vpp vpr vpt vrb vre vri vrp vrr vrt vtb vte vti vtl vtr vtt vtv vvb vvi vvr vvt vvv