-ic -th bbb bbc bbh bbi bbo bbs bbt bby bcb bcc bch bci bco bcs bct bcy bhb bhc bhh bhi bho bhs bht bi- bib bic bih bii bio bis bit biy bob boc boh boi boo bos bot boy bsb bsc bsh bsi bso bss bst bsy btb btc bth bti bto bts btt bty by- byc byh byi byo bys byt c-- cbb cbc cbh cbi cbo cbs cbt cby ccb ccc cch cci cco ccs cct ch- chb chc chh chi cho chs cht chy ci- cib cic cih cii cio cis cit co- cob coc coh coi coo cos cot coy csb csc csh csi cso css cst csy ctb ctc cth cti cto cts ctt cty cyb cyc cyo cys cyt h-i hbb hbc hbh hbi hbo hbs hbt hby hcb hcc hch hci hco hcs hct hcy hhb hhc hhh hhi hho hhs hht hhy hib hic hih hii hio his hit hob hoc hoh hoi hoo hos hot hoy hsb hsc hsh hsi hss hst hsy htb htc hth hti hto hts htt hty hy- hyb hyc hyh hyi hyo hys hyt hyy ibb ibc ibh ibi ibo ibs ibt iby icb icc ich ici ico ics ict icy ihb ihc ihh ihi iho ihs iht ihy iib iic iih iii iio iis iit io- iob ioc ioh ioi ioo ios iot is- isb isc ish isi iso iss ist isy itb itc ith iti ito its itt ity iyc iyo iys iyt iyy o-i ob- obb obc obh obi obo obs obt oby oc- ocb occ och oci oco ocs oct ohc ohh ohi oho ohs oht oib oic oii oio ois oit oo- oob ooc ooh ooi ooo oos oot os- osb osc osh osi oso oss ost ot- otb otc oth oti oto ots ott oyi oyo oys sbb sbc sbh sbi sbo sbs sbt sby scb scc sch sci sco scs sct sh- shb shc shh shi sho shs sht shy sib sic sih sii sio sis sit sob soc soh soi soo sos sot soy ss- ssb ssc ssh ssi sso sss sst stb stc sth sti sto sts stt sty sy- syb syc syh syi sys syt tbb tbc tbh tbi tbo tbs tbt tcb tcc tch tci tco tcs tct th- thb thc thh thi tho ths tht thy tib tic tih tii tio tis tit tiy to- tob toc toh toi too tos tot toy tsb tsc tsh tsi tso tss tst tsy ttb ttc tth tti tto tts ttt tty tyc tyo tys tyt ybc ybi ybs yby ycc ych yci yco ycs ycy yhc yhi yhs yht yih yii yio yis yit yob yoc yoi yoo yos yot yoy ysb ysc ysi yso yss yst ysy ytc yth yto yts ytt yyb yyc yys yyt yyy