-th bbb bbh bbi bbk bbo bbr bbs bbt bby bhb bhh bhi bhk bho bhr bhs bht bi- bib bih bii bik bio bir bis bit biy bkb bkk bko bkr bks bkt bob boh boi bok boo bor bos bot boy brb brh bri brk bro brr brs brt bry bsb bsh bsi bsk bso bsr bss bst bsy btb bth bti btk bto btr bts btt bty by- byh byi byk byo byr bys byt h-i hbb hbh hbi hbk hbo hbr hbs hbt hby hhb hhh hhi hhk hho hhr hhs hht hhy hib hih hii hik hio hir his hit hkb hkh hki hkk hko hkr hks hkt hob hoh hoi hok hoo hor hos hot hoy hr- hrb hrh hri hrk hro hrr hrs hrt hsb hsh hsi hsk hsr hss hst hsy htb hth hti htk hto htr hts htt hty hy- hyb hyh hyi hyo hyr hys hyt hyy ibb ibh ibi ibk ibo ibr ibs ibt iby ihb ihh ihi ihk iho ihr ihs iht ihy 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 iry is- isb ish isi isk iso isr iss ist isy itb ith iti itk ito its itt ity iyo iyr iys iyt iyy 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 kky kob koh koi kok koo kor kos kot koy kri krk kro krr krs krt kry ksb ksh ksi ksk kso ksr kss kst ktb kth ktk kto ktr kts ktt kyo kyr kys kyt o-i ob- obb obh obi obk obo obr obs obt oby 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 ory os- osb osh osi osk oso osr oss ost ot- otb oth oti otk oto otr ots ott oyi oyo oys rbb rbh rbi rbk rbo rbr rbs rbt rh- rhb rhh rhi rho rhr rhs rht rib rih rii rik rio rir ris rit riy rkb rkk rko rks rkt rky rob roh roi rok roo ror ros rot roy rrb rrh rri rrk rrr rrs rrt rsb rsh rsi rsk rso rsr rss rst rtb rti rtk rto rtr rts rtt rty ry- ryk ryo ryr rys ryy sbb sbh sbi sbk sbo sbr sbs sbt sby sh- shb shh shi shk sho shr shs sht shy sib sih sii sik sio sir sis sit sk- skb skh ski skk sko skr sks skt sky sob soh soi sok soo sor sos sot soy sr- srb srh sri srk sro srr srs srt sry ss- ssb ssh ssi ssk sso ssr sss sst stb sth sti stk sto str sts stt sty sy- syb syh syi syk syr sys syt tbb tbh tbi tbk tbo tbr tbs tbt th- thb thh thi thk tho thr ths tht thy tib tih tii tik tio tir tis tit tiy tkb tkk tko tkr tks tkt tky to- tob toh toi tok too tor tos tot toy trb trh tri trk tro trr trs trt try tsb tsh tsi tsk tso tsr tss tst tsy ttb tth tti ttk tto ttr tts ttt tty tyo tyr tys tyt ybi ybr ybs yby yhi yhs yht yih yii yio yir yis yit yki ykk yob yoi yok yoo yor yos yot yoy yro yrs yrt ysb ysi ysk yso ysr yss yst ysy yth ytk yto ytr yts ytt yyb yys yyt yyy