-ol b-u bbb bbc bbh bbl bbo bbr bbs bbu bcb bcc bch bcl bco bcr bcs bcu bhb bhc bhh bhl bho bhr bhs bhu blb blc blh bll blo blr bls blu bob boc boh bol boo bor bos bou brb brh brl bro brr brs bru bsb bsc bsh bsl bso bsr bss bsu bub buc buh bul buo bur bus buu c-- cbb cbc cbh cbl cbo cbr cbs cbu ccb ccc cch ccl cco ccr ccs ccu ch- chb chc chh chl cho chr chs chu cl- clb clc clh cll clo clr cls clu co- cob coc coh col coo cor cos cou crb crc crh crl cro crr crs cru csb csc csh csl cso csr css csu cub cuc cuh cul cuo cur cus cuu hbb hbc hbh hbl hbo hbr hbs hbu hcb hcc hch hcl hco hcr hcs hhb hhc hhh hhl hho hhr hhs hhu hlb hlc hlh hll hlo hlr hls hlu hob hoc hoh hol hoo hor hos hou hr- hrb hrc hrh hrl hro hrr hrs hru hsb hsc hsh hsl hsr hss hsu hub huc huh hul huo hur hus huu lbb lbc lbh lbl lbo lbr lbs lbu lcb lcc lch lcl lco lcr lcs lcu lhb lhc lhh lho lhr lhs lhu llb llc lll llo llr lls llu lob loc loh lol loo lor los lou lrb lrc lrh lro lrr lrs lru lsb lsc lsh lsl lso lsr lss lsu lub luc luh lul luo lur lus luu ob- obb obc obh obl obo obr obs obu oc- ocb occ och ocl oco ocr ocs ocu ohc ohh ohl oho ohr ohs ohu olb olc oll olo ols olu oo- oob ooc ooh ool ooo oor oos or- orb orc orh orl oro orr ors oru os- osb osc osh osl oso osr oss osu ou- ouc ouh oul ouo our ous rbb rbc rbh rbl rbo rbr rbs rbu rcb rcc rch rcl rco rcr rcs rcu rh- rhb rhc rhh rhl rho rhr rhs rhu rlc rlh rll rlo rlr rls rlu rob roc roh rol roo ror ros rou rrb rrc rrh rrl rrr rrs rru rsb rsc rsh rsl rso rsr rss rsu rub ruc ruh ruo rur rus ruu sbb sbc sbh sbl sbo sbr sbs sbu scb scc sch scl sco scr scs scu sh- shb shc shh shl sho shr shs shu slb slc slh sll slo slr sls slu sob soc soh sol soo sor sos sou sr- srb src srh srl sro srr srs ss- ssb ssc ssh ssl sso ssr sss ssu sub suc suh sul suo sur sus suu ubb ubc ubh ubl ubo ubr ubs ubu ucb ucc uch ucl uco ucr ucs ucu uhb uhc uhh uhl uho uhr uhs uhu ulb ulc ull ulo ulr uls ulu uob uoc uol uoo uor uos ur- urb urc url uro urr urs uru usb usc ush usl uso usr uss usu uuc uur uus uuu