-er bbb bbe bbh bbi bbk bbl bbr bbs be- beb bee beh bei bek bel ber bes bhb bhe bhh bhi bhk bhl bhr bhs bi- bib bie bih bii bik bil bir bis bkb bke bkk bkl bkr bks blb ble blh bli blk bll blr bls brb bre brh bri brk brl brr brs bsb bse bsh bsi bsk bsl bsr bss ebb ebe ebh ebi ebk ebl ebr ebs eeb eee eek eel eer ees ehb ehe ehh ehi ehl ehr ehs eib eie eii eik eil eir eis ekb eke ekh eki ekl ekr eks elb ele elh eli elk ell elr els erb ere erh eri erk erl err ers es- esb ese esh esi esk esl esr ess h-i hbb hbe hbh hbi hbk hbl hbr hbs he- heb hee heh hei hek hel her hes hhb hhe hhh hhi hhk hhl hhr hhs hib hie hih hii hik hil hir his hkb hkh hki hkk hkl hkr hks hlb hle hlh hli hll hlr hls hr- hrb hre hrh hri hrk hrl hrr hrs hsb hse hsh hsi hsk hsl hsr hss ibb ibe ibh ibi ibk ibl ibr ibs ie- iee iei iek iel ier ies ihb ihe ihh ihi ihk ihl ihr ihs iib iie iih iii iil iir iis ikb ike iki ikk ikl ikr iks il- ilb ile ilh ili ilk ill ilr ils ir- irb ire iri irk irl irr irs is- isb ise ish isi isk isl isr iss kbb kbe kbh kbi kbk kbl kbr kbs ke- keb kee keh kei kek kel ker kes khe khh khi khk khr khs kib kie kih kii kik kil kir kis kkb kke kkh kki kkk kkl kkr kks kl- klb klh kli klr kls kri krk krl krr krs ksb kse ksh ksi ksk ksl ksr kss lbb lbe lbh lbi lbk lbl lbr lbs leb lee leh lei lek lel ler les lhb lhh lhi lhk lhr lhs lib lie lih lii lik lil lir lis lkb lkh lkl lkr lks llb lle lli llk lll llr lls lrb lrh lri lrk lrr lrs lsb lse lsh lsi lsk lsl lsr lss rbb rbe rbh rbi rbk rbl rbr rbs re- reb ree reh rei rek rel rer res rh- rhb rhe rhh rhi rhl rhr rhs rib rie rih rii rik ril rir ris rkb rke rkk rks rle rlh rli rll rlr rls rrb rrh rri rrk rrl rrr rrs rsb rse rsh rsi rsk rsl rsr rss sbb sbe sbh sbi sbk sbl sbr sbs se- seb see seh sei sek sel ser ses sh- shb she shh shi shk shl shr shs sib sie sih sii sik sil sir sis sk- skb ske skh ski skk skl skr sks slb sle slh sli slk sll slr sls sr- srb sre srh sri srk srl srr srs ss- ssb sse ssh ssi ssk ssl ssr sss