-ol bbb bbh bbi bbl bbo bbr bbs bhb bhh bhi bhl bho bhr bhs bi- bib bih bii bil bio bir bis blb blh bli bll blo blr bls bob boh boi bol boo bor bos brb brh bri brl bro brr brs bsb bsh bsi bsl bso bsr bss h-i hbb hbh hbi hbl hbo hbr hbs hhb hhh hhi hhl hho hhr hhs hib hih hii hil hio hir his hlb hlh hli hll hlo hlr hls hob hoh hoi hol hoo hor hos hr- hrb hrh hri hrl hro hrr hrs hsb hsh hsi hsl hsr hss ibb ibh ibi ibl ibo ibr ibs ihb ihh ihi ihl iho ihr ihs iib iih iii iil iio iir iis il- ilb ilh ili ill ilo ilr ils io- iob ioh ioi iol ioo ior ios ir- irb iri irl iro irr irs is- isb ish isi isl iso isr iss lbb lbh lbi lbl lbo lbr lbs lhb lhh lhi lho lhr lhs lib lih lii lil lio lir lis llb lli lll llo llr lls lob loh loi lol loo lor los lrb lrh lri lro lrr lrs lsb lsh lsi lsl lso lsr lss o-i ob- obb obh obi obl obo obr obs ohh ohi ohl oho ohr ohs oib oii oil oio oir ois olb oli oll olo ols oo- oob ooh ooi ool ooo oor oos or- orb orh ori orl oro orr ors os- osb osh osi osl oso osr oss rbb rbh rbi rbl rbo rbr rbs rh- rhb rhh rhi rhl rho rhr rhs rib rih rii ril rio rir ris rlh rli rll rlo rlr rls rob roh roi rol roo ror ros rrb rrh rri rrl rrr rrs rsb rsh rsi rsl rso rsr rss sbb sbh sbi sbl sbo sbr sbs sh- shb shh shi shl sho shr shs sib sih sii sil sio sir sis slb slh sli sll slo slr sls sob soh soi sol soo sor sos sr- srb srh sri srl sro srr srs ss- ssb ssh ssi ssl sso ssr sss