-ol b-p bbb bbi bbk bbl bbo bbp bbr bbs bbt bi- bib bii bik bil bio bip bir bis bit bkb bkk bkl bko bkp bkr bks bkt blb bli blk bll blo blp blr bls blt bob boi bok bol boo bop bor bos bot bpb bpi bpl bpo bpp bpr bps bpt brb bri brk brl bro brp brr brs brt bsb bsi bsk bsl bso bsp bsr bss bst btb bti btk btl bto btp btr bts btt ibb ibi ibk ibl ibo ibp ibr ibs ibt iib iii iil iio iip iir iis iit ikb iki ikk ikl iko ikr iks ikt il- ilb ili ilk ill ilo ilp ilr ils ilt io- iob ioi iol ioo iop ior ios iot ipb ipi ipl ipo ipp ipr ips ipt ir- irb iri irk irl iro irp irr irs irt is- isb isi isk isl iso isp isr iss ist itb iti itk itl ito itp its itt k-t kbb kbi kbk kbl kbo kbp kbr kbs kib kii kik kil kio kip kir kis kit kkb kki kkk kkl kkp kkr kks kkt kl- klb kli klo klr kls klt kob koi kok kol koo kop kor kos kot kpi kpk kpl kpo kpp kpr kps kpt kri krk krl kro krp krr krs krt ksb ksi ksk ksl kso ksp ksr kss kst ktb ktk ktl kto ktp ktr kts ktt l-p lbb lbi lbk lbl lbo lbp lbr lbs lbt lib lii lik lil lio lip lir lis lit lkb lkl lkp lkr lks lkt llb lli llk lll llo llp llr lls llt lob loi lok lol loo lop lor los lot lpb lpi lpk lpl lpo lpp lpr lps lpt lrb lri lrk lro lrp lrr lrs lrt lsb lsi lsk lsl lso lsp lsr lss lst ltb lti ltk ltl lto ltp ltr lts ltt o-i ob- obb obi obk obl obo obp obr obs obt oib oii oik oil oio oip oir ois oit okb oki okk okl oko okp okr oks olb oli olk oll olo olp ols olt oo- oob ooi ook ool ooo oop oor oos oot op- opb opi opk opl opo opp opr ops opt or- orb ori ork orl oro orp orr ors ort os- osb osi osk osl oso osp osr oss ost ot- otb oti otk otl oto otp otr ots ott p-p pbb pbi pbk pbl pbo pbp pbr pbs pbt pib pii pik pil pio pip pir pis pit pkb pki pkl pko pkp pkr pks pkt plb pli plk pll plo plp plr pls plt pob poi pok pol poo pop por pos pot ppb ppi ppk ppl ppo ppp ppr pps ppt prb pri prk prl pro prp prr prs prt ps- psb psi psk psl pso psp psr pss pst pt- ptb pti ptk ptl pto ptp ptr pts ptt rbb rbi rbk rbl rbo rbp rbr rbs rbt rib rii rik ril rio rip rir ris rit rkb rkk rko rkp rks rkt rli rll rlo rlp rlr rls rlt rob roi rok rol roo rop ror ros rot rpb rpi rpk rpl rpo rpp rpr rps rpt rrb rri rrk rrl rrp rrr rrs rrt rsb rsi rsk rsl rso rsp rsr rss rst rtb rti rtk rtl rto rtp rtr rts rtt sbb sbi sbk sbl sbo sbp sbr sbs sbt sib sii sik sil sio sip sir sis sit sk- skb ski skk skl sko skp skr sks skt slb sli slk sll slo slp slr sls slt sob soi sok sol soo sop sor sos sot spb spi spk spl spo spp spr sps spt sr- srb sri srk srl sro srp srr srs srt ss- ssb ssi ssk ssl sso ssp ssr sss sst stb sti stk stl sto stp str sts stt tbb tbi tbk tbl tbo tbp tbr tbs tbt tib tii tik til tio tip tir tis tit tkb tkk tkl tko tkp tkr tks tkt tli tlk tll tlo tlp tlr tls tlt to- tob toi tok tol too top tor tos tot tpb tpi tpk tpl tpo tpp tpr tps tpt trb tri trk trl tro trp trr trs trt tsb tsi tsk tsl tso tsp tsr tss tst ttb tti ttk ttl tto ttp ttr tts ttt