-th bbb bbh bbi bbo bbr bbs bbt bhb bhh bhi bho bhr bhs bht bi- bib bih bii bio bir bis bit bob boh boi boo bor bos bot brb brh bri bro brr brs brt bsb bsh bsi bso bsr bss bst btb bth bti bto btr bts btt h-i hbb hbh hbi hbo hbr hbs hbt hhb hhh hhi hho hhr hhs hht hib hih hii hio hir his hit hob hoh hoi hoo hor hos hot hr- hrb hrh hri hro hrr hrs hrt hsb hsh hsi hsr hss hst htb hth hti hto htr hts htt ibb ibh ibi ibo ibr ibs ibt ihb ihh ihi iho ihr ihs iht iib iih iii iio iir iis iit io- iob ioh ioi ioo ior ios iot ir- irb iri iro irr irs irt is- isb ish isi iso isr iss ist itb ith iti ito its itt o-i ob- obb obh obi obo obr obs obt ohh ohi oho ohr ohs oht oib oii oio oir ois oit oo- oob ooh ooi ooo oor oos oot or- orb orh ori oro orr ors ort os- osb osh osi oso osr oss ost ot- otb oth oti oto otr ots ott rbb rbh rbi rbo rbr rbs rbt rh- rhb rhh rhi rho rhr rhs rht rib rih rii rio rir ris rit rob roh roi roo ror ros rot rrb rrh rri rrr rrs rrt rsb rsh rsi rso rsr rss rst rtb rti rto rtr rts rtt sbb sbh sbi sbo sbr sbs sbt sh- shb shh shi sho shr shs sht sib sih sii sio sir sis sit sob soh soi soo sor sos sot sr- srb srh sri sro srr srs srt ss- ssb ssh ssi sso ssr sss sst stb sth sti sto str sts stt tbb tbh tbi tbo tbr tbs tbt th- thb thh thi tho thr ths tht tib tih tii tio tir tis tit to- tob toh toi too tor tos tot trb trh tri tro trr trs trt tsb tsh tsi tso tsr tss tst ttb tth tti tto ttr tts ttt