-ol b-u bbb bbh bbl bbn bbo bbr bbs bbu bhb bhh bhl bho bhr bhs bhu blb blh bll bln blo blr bls blu bnb bnl bnn bno bnr bns bnu bob boh bol bon boo bor bos bou brb brh brl brn bro brr brs bru bsb bsh bsl bsn bso bsr bss bsu bub buh bul bun buo bur bus buu hbb hbh hbl hbn hbo hbr hbs hbu hhb hhh hhl hhn hho hhr hhs hhu hlb hlh hll hln hlo hlr hls hlu hnb hnh hnl hnn hno hns hnu hob hoh hol hon hoo hor hos hou hr- hrb hrh hrl hrn hro hrr hrs hru hsb hsh hsl hsn hsr hss hsu hub huh hul hun huo hur hus huu lbb lbh lbl lbo lbr lbs lbu lhb lhh lho lhr lhs lhu llb lll lln llo llr lls llu lnb lnh lnl lnn lno lnr lns lnu lob loh lol lon loo lor los lou lrb lrh lrn lro lrr lrs lru lsb lsh lsl lsn lso lsr lss lsu lub luh lul lun luo lur lus luu nbb nbl nbn nbo nbr nbs nbu nhb nhh nhl nhn nhr nhs nhu nlb nlh nll nln nlo nlr nls nlu nnb nnh nnl nnn nno nns nnu no- nob noh nol non noo nor nos nou nrb nrl nrn nro nrr nrs nru nsb nsh nsl nsn nso nsr nss nsu nub nuh nul nun nuo nur nus nuu ob- obb obh obl obn obo obr obs obu ohh ohl ohn oho ohr ohs ohu olb oll oln olo ols olu on- onb onh onl onn ono onr ons onu oo- oob ooh ool oon ooo oor oos or- orb orh orl orn oro orr ors oru os- osb osh osl osn oso osr oss osu ou- ouh oul oun ouo our ous rbb rbh rbl rbn rbo rbr rbs rbu rh- rhb rhh rhl rhn rho rhr rhs rhu rlh rll rln rlo rlr rls rlu rnb rnh rnn rno rnr rns rnu rob roh rol ron roo ror ros rou rrb rrh rrl rrn rrr rrs rru rsb rsh rsl rsn rso rsr rss rsu rub ruh run ruo rur rus ruu sbb sbh sbl sbn sbo sbr sbs sbu sh- shb shh shl shn sho shr shs shu slb slh sll sln slo slr sls slu snb snl snn sno snr sns snu sob soh sol son soo sor sos sou sr- srb srh srl srn sro srr srs ss- ssb ssh ssl ssn sso ssr sss ssu sub suh sul sun suo sur sus suu ubb ubh ubl ubn ubo ubr ubs ubu uhb uhh uhl uho uhr uhs uhu ulb ull uln ulo ulr uls ulu un- unb unh unl unn uno unr uns unu uob uol uon uoo uor uos ur- urb url urn uro urr urs uru usb ush usl usn uso usr uss usu uun uur uus uuu