-ic -th bbb bbc bbh bbi bbo bbr bbt bcb bcc bch bci bco bcr bct bhb bhc bhh bhi bho bhr bht bi- bib bic bih bii bio bir bit bob boc boh boi boo bor bot brb brh bri bro brr brt btb btc bth bti bto btr btt c-- cbb cbc cbh cbi cbo cbr cbt ccb ccc cch cci cco ccr cct ch- chb chc chh chi cho chr cht ci- cib cic cih cii cio cir cit co- cob coc coh coi coo cor cot crb crc crh cri cro crr crt ctb ctc cth cti cto ctr ctt h-i hbb hbc hbh hbi hbo hbr hbt hcb hcc hch hci hco hcr hct hhb hhc hhh hhi hho hhr hht hib hic hih hii hio hir hit hob hoc hoh hoi hoo hor hot hr- hrb hrc hrh hri hro hrr hrt htb htc hth hti hto htr htt ibb ibc ibh ibi ibo ibr ibt icb icc ich ici ico icr ict ihb ihc ihh ihi iho ihr iht iib iic iih iii iio iir iit io- iob ioc ioh ioi ioo ior iot ir- irb irc iri iro irr irt itb itc ith iti ito itt o-i ob- obb obc obh obi obo obr obt oc- ocb occ och oci oco ocr oct ohc ohh ohi oho ohr oht oib oic oii oio oir oit oo- oob ooc ooh ooi ooo oor oot or- orb orc orh ori oro orr ort ot- otb otc oth oti oto otr ott rbb rbc rbh rbi rbo rbr rbt rcb rcc rch rci rco rcr rct rh- rhb rhc rhh rhi rho rhr rht rib ric rih rii rio rir rit rob roc roh roi roo ror rot rrb rrc rrh rri rrr rrt rtb rtc rti rto rtr rtt tbb tbc tbh tbi tbo tbr tbt tcb tcc tch tci tco tcr tct th- thb thc thh thi tho thr tht tib tic tih tii tio tir tit to- tob toc toh toi too tor tot trb trc trh tri tro trr trt ttb ttc tth tti tto ttr ttt