-er b-p bbb bbe bbg bbi bbk bbl bbp bbr bbs be- beb bee beg bei bek bel bep ber bes bev bgb bge bgg bgi bgk bgl bgp bgr bgs bgv bi- bib bie big bii bik bil bip bir bis biv bkb bke bkg bkk bkl bkp bkr bks bkv blb ble blg bli blk bll blp blr bls blv bpb bpe bpg bpi bpl bpp bpr bps bpv brb bre brg bri brk brl brp brr brs brv bsb bse bsg bsi bsk bsl bsp bsr bss bsv bvb bve bvg bvi bvk bvl bvp bvr bvs bvv ebb ebe ebg ebi ebk ebl ebp ebr ebs ebv eeb eee eeg eek eel eep eer ees eev egb ege egg egi egl egp egr egs eib eie eig eii eik eil eip eir eis eiv ekb eke ekg eki ekl ekp ekr eks ekv elb ele elg eli elk ell elp elr els elv ep- epb epe epg epi epl epp epr eps erb ere erg eri erk erl erp err ers erv es- esb ese esg esi esk esl esp esr ess esv evb eve evg evi evl evp evr evs evv g-p gbe gbg gbi gbk gbl gbp gbr gbs gbv ge- geb gee geg gei gek gel gep ger ges gev ggb ggg ggi ggp ggr ggs ggv gib gie gig gii gik gil gip gir gis giv gkb gkp gks glb gle glg gli glk gll glp glr gls glv gpb gpe gpg gpi gpk gpl gpp gpr gps grb gre grg gri grk grl grp grr grs grv gsb gse gsg gsi gsk gsl gsp gsr gss gsv gvb gve gvg gvi gvk gvl gvp gvr gvs i-v ibb ibe ibg ibi ibk ibl ibp ibr ibs ibv ie- iee ieg iei iek iel iep ier ies iev igb ige igg igi igk igl igp igr igs iib iie iii iil iip iir iis ikb ike iki ikk ikl ikr iks ikv il- ilb ile ilg ili ilk ill ilp ilr ils ilv ipb ipe ipg ipi ipl ipp ipr ips ipv ir- irb ire irg iri irk irl irp irr irs irv is- isb ise isg isi isk isl isp isr iss isv ivb ive ivg ivi ivl ivp ivr ivs ivv kbb kbe kbi kbk kbl kbp kbr kbs ke- keb kee keg kei kek kel kep ker kes kev kgb kgi kgl kgp kgs kgv kib kie kig kii kik kil kip kir kis kiv kkb kke kki kkk kkl kkp kkr kks kkv kl- klb klg kli klr kls klv kpe kpi kpk kpl kpp kpr kps kpv krg kri krk krl krp krr krs krv ksb kse ksg ksi ksk ksl ksp ksr kss ksv kvb kvi kvk kvp kvr kvs kvv l-p lbb lbe lbg lbi lbk lbl lbp lbr lbs lbv leb lee leg lei lek lel lep ler les lev lgb lge lgg lgi lgk lgl lgp lgr lgs lgv lib lie lig lii lik lil lip lir lis liv lkb lkg lkl lkp lkr lks llb lle llg lli llk lll llp llr lls llv lpb lpe lpg lpi lpk lpl lpp lpr lps lpv lrb lrg lri lrk lrp lrr lrs lrv lsb lse lsg lsi lsk lsl lsp lsr lss lsv lvb lve lvg lvi lvl lvp lvr lvs lvv p-p pbb pbe pbg pbi pbk pbl pbp pbr pbs peb pee peg pei pek pel pep per pes pev pgb pge pgg pgi pgk pgl pgp pgr pgs pgv pib pie pig pii pik pil pip pir pis piv pkb pke pkg pki pkl pkp pkr pks plb ple plg pli plk pll plp plr pls plv ppb ppe ppg ppi ppk ppl ppp ppr pps ppv prb pre prg pri prk prl prp prr prs prv ps- psb pse psg psi psk psl psp psr pss psv pvb pve pvg pvi pvk pvl pvp pvr pvs pvv rbb rbe rbg rbi rbk rbl rbp rbr rbs re- reb ree reg rei rek rel rep rer res rev rgb rge rgg rgi rgk rgp rgr rgs rgv rib rie rig rii rik ril rip rir ris riv rkb rke rkg rkk rkp rks rkv rle rlg rli rll rlp rlr rls rpb rpe rpg rpi rpk rpl rpp rpr rps rpv rrb rrg rri rrk rrl rrp rrr rrs rsb rse rsg rsi rsk rsl rsp rsr rss rsv rvb rve rvg rvi rvl rvp rvr rvs rvv sbb sbe sbg sbi sbk sbl sbp sbr sbs sbv se- seb see seg sei sek sel sep ser ses sev sgb sge sgg sgi sgk sgl sgp sgr sgs sgv sib sie sig sii sik sil sip sir sis siv sk- skb ske skg ski skk skl skp skr sks slb sle slg sli slk sll slp slr sls slv spb spe spg spi spk spl spp spr sps spv sr- srb sre srg sri srk srl srp srr srs srv ss- ssb sse ssg ssi ssk ssl ssp ssr sss ssv svb sve svg svi svk svl svp svr svs svv v-e vbg vbi vbk vbl vbr vbs vbv veb vee veg vei vek vel vep ver ves vgg vgl vgp vgr vgs vi- vib vie vig vii vik vil vip vir vis viv vkb vkg vkp vl- vlb vle vlk vll vlp vls vlv vpb vpe vpg vpi vpk vpl vpp vpr vps vrb vre vrg vri vrk vrp vrr vrs vsb vse vsg vsi vsk vsl vsp vsr vss vsv vvb vvg vvi vvr vvs vvv