-th a-a a-b a-c a-t aaa aab aac aae aah aao aap aat ab- aba abb abc abe abh abo abp abt ac- aca acb acc ace ach aco acp act aea aeb aec aee aeh aeo aep aet aha ahb ahc ahe ahh aho ahp aht aoa aob aoc aoe aoh aoo aop aot ap- apa apb apc ape aph apo app apt at- ata atb atc ate ath ato atp att b-p baa bab bac bae bah bao bap bat bba bbb bbc bbe bbh bbo bbp bbt bca bcb bcc bce bch bco bcp bct be- bea beb bec bee beh beo bep bet bha bhb bhc bhe bhh bho bhp bht boa bob boc boe boh boo bop bot bpa bpb bpc bpe bph bpo bpp bpt bta btb btc bte bth bto btp btt c-- caa cab cac cae cah cao cap cat cba cbb cbc cbe cbh cbo cbp cbt cca ccb ccc cce cch cco ccp cct ce- cea ceb cec cee ceh ceo cep cet ch- cha chb chc che chh cho chp cht co- coa cob coc coe coh coo cop cot cpa cpb cpc cpe cph cpo cpp cpt cta ctb ctc cte cth cto ctp ctt eaa eab eac eae eah eao eap eat eba ebb ebc ebe ebh ebo ebp ebt ec- eca ecb ecc ece ech eco ect eea eeb eec eee eeo eep eet eha ehb ehc ehe ehh eho ehp eht eo- eoa eob eoc eoe eoh eoo eop eot ep- epa epb epc epe eph epo epp ept eta etb etc ete eth eto etp ett haa hab hac hae hah hao hap hat hba hbb hbc hbe hbh hbo hbp hbt hca hcb hcc hce hch hco hcp hct he- hea heb hec hee heh heo hep het hha hhb hhc hhe hhh hho hhp hht hoa hob hoc hoe hoh hoo hop hot hpa hpb hpc hpe hph hpo hpp hpt hta htb htc hte hth hto htp htt oaa oab oac oae oah oao oap oat ob- oba obb obc obe obh obo obp obt oc- oca ocb occ och oco ocp oct oea oeb oec oee oeh oeo oep oet oha ohc ohe ohh oho ohp oht oo- ooa oob ooc ooh ooo oop oot op- opa opb opc ope oph opo opp opt ot- ota otb otc ote oth oto otp ott p-p paa pab pac pae pah pao pap pat pba pbb pbc pbe pbo pbp pbt pca pcb pcc pce pch pco pcp pct pea peb pec pee peh peo pep pet pha phb phc phe pho php pht poa pob poc poe poh poo pop pot ppa ppb ppc ppe pph ppo ppp ppt pt- pta ptb ptc pte pth pto ptp ptt taa tab tac tae tah tao tap tat tba tbb tbc tbe tbh tbo tbp tbt tca tcb tcc tce tch tco tcp tct te- tea teb tec tee teh teo tep tet th- tha thb thc the thh tho thp tht to- toa tob toc toe toh too top tot tpa tpb tpc tpe tph tpo tpp tpt tta ttb ttc tte tth tto ttp ttt