-er -ic -th a-a a-b a-c a-i a-t aaa aab aac aae aah aai aar aat ab- aba abb abc abe abh abi abr abt ac- aca acb acc ace ach aci acr act aea aeb aec aee aeh aei aer aet aha ahb ahc ahe ahh ahi ahr aht ai- aia aib aic aie aih aii air ait ar- ara arb arc are arh ari arr art at- ata atb atc ate ath ati atr att baa bab bac bae bah bai bar bat bba bbb bbc bbe bbh bbi bbr bbt bca bcb bcc bce bch bci bcr bct be- bea beb bec bee beh bei ber bet bha bhb bhc bhe bhh bhi bhr bht bi- bia bib bic bie bih bii bir bit bra brb bre brh bri brr brt bta btb btc bte bth bti btr btt c-- caa cab cac cae cah cai car cat cba cbb cbc cbe cbh cbi cbr cbt cca ccb ccc cce cch cci ccr cct ce- cea ceb cec cee ceh cei cer cet ch- cha chb chc che chh chi chr cht ci- cia cib cic cie cih cii cir cit cra crb crc cre crh cri crr crt cta ctb ctc cte cth cti ctr ctt eaa eab eac eae eah eai ear eat eba ebb ebc ebe ebh ebi ebr ebt ec- eca ecb ecc ece ech eci ecr ect eea eeb eec eee eer eet eha ehb ehc ehe ehh ehi ehr eht eia eib eic eie eii eir eit era erb erc ere erh eri err ert eta etb etc ete eth eti etr ett h-i haa hab hac hae hah hai har hat hba hbb hbc hbe hbh hbi hbr hbt hca hcb hcc hce hch hci hcr hct he- hea heb hec hee heh hei her het hha hhb hhc hhe hhh hhi hhr hht hia hib hic hie hih hii hir hit hr- hra hrb hrc hre hrh hri hrr hrt hta htb htc hte hth hti htr htt ia- iaa iab iac iae iah iai iar iat iba ibb ibc ibe ibh ibi ibr ibt ica icb icc ice ich ici icr ict ie- iea iec iee iei ier iet iha ihb ihc ihe ihh ihi ihr iht iia iib iic iie iih iii iir iit ir- ira irb irc ire iri irr irt ita itb itc ite ith iti itt ra- raa rab rac rae rah rai rar rat rba rbb rbc rbe rbh rbi rbr rbt rca rcb rcc rce rch rci rcr rct re- rea reb rec ree reh rei rer ret rh- rha rhb rhc rhe rhh rhi rhr rht ria rib ric rie rih rii rir rit rra rrb rrc rrh rri rrr rrt rta rtb rtc rte rti rtr rtt taa tab tac tae tah tai tar tat tba tbb tbc tbe tbh tbi tbr tbt tca tcb tcc tce tch tci tcr tct te- tea teb tec tee teh tei ter tet th- tha thb thc the thh thi thr tht tia tib tic tie tih tii tir tit tra trb trc tre trh tri trr trt tta ttb ttc tte tth tti ttr ttt