-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aar aat aau ab- aba abb abc abh abi abr abt abu ac- aca acb acc ach aci acr act acu aha ahb ahc ahh ahi ahr aht ahu ai- aia aib aic aih aii air ait aiu ar- ara arb arc arh ari arr art aru at- ata atb atc ath ati atr att atu au- aua aub auc auh aui aur aut b-u baa bab bac bah bai bar bat bau bba bbb bbc bbh bbi bbr bbt bbu bca bcb bcc bch bci bcr bct bcu bha bhb bhc bhh bhi bhr bht bhu bi- bia bib bic bih bii bir bit biu bra brb brh bri brr brt bru bta btb btc bth bti btr btt btu bua bub buc buh bui bur but buu c-- caa cab cac cah cai car cat cau cba cbb cbc cbh cbi cbr cbt cbu cca ccb ccc cch cci ccr cct ccu ch- cha chb chc chh chi chr cht chu ci- cia cib cic cih cii cir cit ciu cra crb crc crh cri crr crt cru cta ctb ctc cth cti ctr ctt ctu cua cub cuc cuh cui cur cut cuu h-i haa hab hac hah hai har hat hau hba hbb hbc hbh hbi hbr hbt hbu hca hcb hcc hch hci hcr hct hha hhb hhc hhh hhi hhr hht hhu hia hib hic hih hii hir hit hiu hr- hra hrb hrc hrh hri hrr hrt hru hta htb htc hth hti htr htt hua hub huc huh hui hur hut huu ia- iaa iab iac iah iai iar iat iau iba ibb ibc ibh ibi ibr ibt ibu ica icb icc ich ici icr ict icu iha ihb ihc ihh ihi ihr iht ihu iia iib iic iih iii iir iit iiu ir- ira irb irc iri irr irt iru ita itb itc ith iti itt itu iu- iua iub iuc iui iur iut ra- raa rab rac rah rai rar rat rau rba rbb rbc rbh rbi rbr rbt rbu rca rcb rcc rch rci rcr rct rcu rh- rha rhb rhc rhh rhi rhr rht rhu ria rib ric rih rii rir rit rra rrb rrc rrh rri rrr rrt rru rta rtb rtc rti rtr rtt rtu rua rub ruc ruh rui rur rut ruu taa tab tac tah tai tar tat tau tba tbb tbc tbh tbi tbr tbt tbu tca tcb tcc tch tci tcr tct tcu th- tha thb thc thh thi thr tht thu tia tib tic tih tii tir tit tiu tra trb trc trh tri trr trt tru tta ttb ttc tth tti ttr ttt ttu tua tub tuc tuh tui tur tut tuu ua- uaa uab uac uah uai uar uat uau uba ubb ubc ubh ubi ubr ubt ubu uca ucb ucc uch uci ucr uct ucu uha uhb uhc uhh uhi uhr uht uhu uia uib uic uii uir uit uiu ur- ura urb urc uri urr urt uru uta utb utc uth uti utr utt utu uua uuc uur uut uuu