-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aar aat ab- aba abb abc abh abi abr abt ac- aca acb acc ach aci acr act aha ahb ahc ahh ahi ahr aht ai- aia aib aic aih aii air ait ar- ara arb arc arh ari arr art at- ata atb atc ath ati atr att baa bab bac bah bai bar bat bba bbb bbc bbh bbi bbr bbt bca bcb bcc bch bci bcr bct bha bhb bhc bhh bhi bhr bht bi- bia bib bic bih bii bir bit bra brb brh bri brr brt bta btb btc bth bti btr btt c-- caa cab cac cah cai car cat cba cbb cbc cbh cbi cbr cbt cca ccb ccc cch cci ccr cct ch- cha chb chc chh chi chr cht ci- cia cib cic cih cii cir cit cra crb crc crh cri crr crt cta ctb ctc cth cti ctr ctt h-i haa hab hac hah hai har hat hba hbb hbc hbh hbi hbr hbt hca hcb hcc hch hci hcr hct hha hhb hhc hhh hhi hhr hht hia hib hic hih hii hir hit hr- hra hrb hrc hrh hri hrr hrt hta htb htc hth hti htr htt ia- iaa iab iac iah iai iar iat iba ibb ibc ibh ibi ibr ibt ica icb icc ich ici icr ict iha ihb ihc ihh ihi ihr iht iia iib iic iih iii iir iit ir- ira irb irc iri irr irt ita itb itc ith iti itt ra- raa rab rac rah rai rar rat rba rbb rbc rbh rbi rbr rbt rca rcb rcc rch rci rcr rct rh- rha rhb rhc rhh rhi rhr rht ria rib ric rih rii rir rit rra rrb rrc rrh rri rrr rrt rta rtb rtc rti rtr rtt taa tab tac tah tai tar tat tba tbb tbc tbh tbi tbr tbt tca tcb tcc tch tci tcr tct th- tha thb thc thh thi thr tht tia tib tic tih tii tir tit tra trb trc trh tri trr trt tta ttb ttc tth tti ttr ttt