-th bbb bbh bbi bbk bbo bbr bbs bbt bhb bhh bhi bhk bho bhr bhs bht bi- bib bih bii bik bio bir bis bit bkb bkk bko bkr bks bkt bob boh boi bok boo bor bos bot brb brh bri brk bro brr brs brt bsb bsh bsi bsk bso bsr bss bst btb bth bti btk bto btr bts btt h-i hbb hbh hbi hbk hbo hbr hbs hbt hhb hhh hhi hhk hho hhr hhs hht hib hih hii hik hio hir his hit hkb hkh hki hkk hko hkr hks hkt hob hoh hoi hok hoo hor hos hot hr- hrb hrh hri hrk hro hrr hrs hrt hsb hsh hsi hsk hsr hss hst htb hth hti htk hto htr hts htt ibb ibh ibi ibk ibo ibr ibs ibt ihb ihh ihi ihk iho ihr ihs iht iib iih iii iio iir iis iit ikb iki ikk iko ikr iks ikt io- iob ioh ioi ioo ior ios iot ir- irb iri irk iro irr irs irt is- isb ish isi isk iso isr iss ist itb ith iti itk ito its itt k-t kbb kbh kbi kbk kbo kbr kbs khh khi khk kho khr khs kib kih kii kik kio kir kis kit kkb kkh kki kkk kkr kks kkt kob koh koi kok koo kor kos kot kri krk kro krr krs krt ksb ksh ksi ksk kso ksr kss kst ktb kth ktk kto ktr kts ktt o-i ob- obb obh obi obk obo obr obs obt ohh ohi oho ohr ohs oht oib oii oik oio oir ois oit okb oki okk oko okr oks oo- oob ooh ooi ook ooo oor oos oot or- orb orh ori ork oro orr ors ort os- osb osh osi osk oso osr oss ost ot- otb oth oti otk oto otr ots ott rbb rbh rbi rbk rbo rbr rbs rbt rh- rhb rhh rhi rho rhr rhs rht rib rih rii rik rio rir ris rit rkb rkk rko rks rkt rob roh roi rok roo ror ros rot rrb rrh rri rrk rrr rrs rrt rsb rsh rsi rsk rso rsr rss rst rtb rti rtk rto rtr rts rtt sbb sbh sbi sbk sbo sbr sbs sbt sh- shb shh shi shk sho shr shs sht sib sih sii sik sio sir sis sit sk- skb skh ski skk sko skr sks skt sob soh soi sok soo sor sos sot sr- srb srh sri srk sro srr srs srt ss- ssb ssh ssi ssk sso ssr sss sst stb sth sti stk sto str sts stt tbb tbh tbi tbk tbo tbr tbs tbt th- thb thh thi thk tho thr ths tht tib tih tii tik tio tir tis tit tkb tkk tko tkr tks tkt to- tob toh toi tok too tor tos tot trb trh tri trk tro trr trs trt tsb tsh tsi tsk tso tsr tss tst ttb tth tti ttk tto ttr tts ttt