-er -ic -th a-a a-b a-c a-i a-t aaa aab aac aad aae aah aai aar aat ab- aba abb abc abd abe abh abi abr abt ac- aca acb acc acd ace ach aci acr act ad- ada adb adc add ade adh adi adr adt aea aeb aec aed aee aeh aei aer aet aha ahb ahc ahd ahe ahh ahi ahr aht ai- aia aib aic aid aie aih aii air ait ar- ara arb arc ard are arh ari arr art at- ata atb atc atd ate ath ati atr att baa bab bac bad bae bah bai bar bat bba bbb bbc bbd bbe bbh bbi bbr bbt bca bcb bcc bcd bce bch bci bcr bct bda bdb bdc bdd bde bdh bdi bdr bdt be- bea beb bec bed bee beh bei ber bet bha bhb bhc bhd bhe bhh bhi bhr bht bi- bia bib bic bid bie bih bii bir bit bra brb brd bre brh bri brr brt bta btb btc btd bte bth bti btr btt c-- caa cab cac cad cae cah cai car cat cba cbb cbc cbd cbe cbh cbi cbr cbt cca ccb ccc ccd cce cch cci ccr cct cda cdb cdc cdd cde cdh cdi cdr cdt ce- cea ceb cec ced cee ceh cei cer cet ch- cha chb chc chd che chh chi chr cht ci- cia cib cic cid cie cih cii cir cit cra crb crc crd cre crh cri crr crt cta ctb ctc ctd cte cth cti ctr ctt daa dab dac dad dae dah dai dar dat dba dbb dbc dbd dbe dbh dbi dbr dbt dca dcb dcc dcd dce dci dcr dct dda ddb ddc ddd dde ddh ddi ddr ddt de- dea deb dec ded dee deh dei der det dh- dha dhb dhc dhd dhe dhh dhi dhr dht di- dia dib dic did die dih dii dir dit dra drb drc drd dre dri drr drt dta dtb dtc dtd dte dth dti dtr dtt eaa eab eac ead eae eah eai ear eat eba ebb ebc ebd ebe ebh ebi ebr ebt ec- eca ecb ecc ecd ece ech eci ecr ect ed- eda edb edc edd ede edh edi edr edt eea eeb eec eed eee eer eet eha ehb ehc ehd ehe ehh ehi ehr eht eia eib eic eid eie eii eir eit era erb erc erd ere erh eri err ert eta etb etc etd ete eth eti etr ett h-i haa hab hac had hae hah hai har hat hba hbb hbc hbd hbe hbh hbi hbr hbt hca hcb hcc hcd hce hch hci hcr hct hda hdb hdc hdd hde hdh hdi hdr hdt he- hea heb hec hed hee heh hei her het hha hhb hhc hhd hhe hhh hhi hhr hht hia hib hic hid hie hih hii hir hit hr- hra hrb hrc hrd hre hrh hri hrr hrt hta htb htc htd hte hth hti htr htt i-d ia- iaa iab iac iad iae iah iai iar iat iba ibb ibc ibd ibe ibh ibi ibr ibt ica icb icc icd ice ich ici icr ict ida idb idc idd ide idh idi idr idt ie- iea iec ied iee iei ier iet iha ihb ihc ihd ihe ihh ihi ihr iht iia iib iic iid iie iih iii iir iit ir- ira irb irc ird ire iri irr irt ita itb itc itd ite ith iti itt ra- raa rab rac rad rae rah rai rar rat rba rbb rbc rbd rbe rbh rbi rbr rbt rca rcb rcc rcd rce rch rci rcr rct rda rdb rdc rdd rde rdh rdi rdr rdt re- rea reb rec red ree reh rei rer ret rh- rha rhb rhc rhd rhe rhh rhi rhr rht ria rib ric rid rie rih rii rir rit rra rrb rrc rrd rrh rri rrr rrt rta rtb rtc rtd rte rti rtr rtt taa tab tac tad tae tah tai tar tat tba tbb tbc tbd tbe tbh tbi tbr tbt tca tcb tcc tcd tce tch tci tcr tct tda tdb tdc tdd tde tdh tdi tdr tdt te- tea teb tec ted tee teh tei ter tet th- tha thb thc thd the thh thi thr tht tia tib tic tid tie tih tii tir tit tra trb trc trd tre trh tri trr trt tta ttb ttc ttd tte tth tti ttr ttt