-th bbb bbh bbk bbo bbs bbt bby bhb bhh bhk bho bhs bht bkb bkk bko bks bkt bob boh bok boo bos bot boy bsb bsh bsk bso bss bst bsy btb bth btk bto bts btt bty by- byh byk byo bys byt hbb hbh hbk hbo hbs hbt hby hhb hhh hhk hho hhs hht hhy hkb hkh hkk hko hks hkt hob hoh hok hoo hos hot hoy hsb hsh hsk hss hst hsy htb hth htk hto hts htt hty hy- hyb hyh hyo hys hyt hyy k-t kbb kbh kbk kbo kbs khh khk kho khs kkb kkh kkk kks kkt kky kob koh kok koo kos kot koy ksb ksh ksk kso kss kst ktb kth ktk kto kts ktt kyo kys kyt ob- obb obh obk obo obs obt oby ohh oho ohs oht okb okk oko oks oo- oob ooh ook ooo oos oot os- osb osh osk oso oss ost ot- otb oth otk oto ots ott oyo oys sbb sbh sbk sbo sbs sbt sby sh- shb shh shk sho shs sht shy sk- skb skh skk sko sks skt sky sob soh sok soo sos sot soy ss- ssb ssh ssk sso sss sst stb sth stk sto sts stt sty sy- syb syh syk sys syt tbb tbh tbk tbo tbs tbt th- thb thh thk tho ths tht thy tkb tkk tko tks tkt tky to- tob toh tok too tos tot toy tsb tsh tsk tso tss tst tsy ttb tth ttk tto tts ttt tty tyo tys tyt ybs yby yhs yht ykk yob yok yoo yos yot yoy ysb ysk yso yss yst ysy yth ytk yto yts ytt yyb yys yyt yyy