-th a-a a-b a-c a-t aaa aab aac aah aao aap aas aat ab- aba abb abc abh abo abp abs abt ac- aca acb acc ach aco acp acs act aha ahb ahc ahh aho ahp ahs aht aoa aob aoc aoh aoo aop aos aot ap- apa apb apc aph apo app aps apt as- asa asb asc ash aso asp ass ast at- ata atb atc ath ato atp ats att b-p baa bab bac bah bao bap bas bat bba bbb bbc bbh bbo bbp bbs bbt bca bcb bcc bch bco bcp bcs bct bha bhb bhc bhh bho bhp bhs bht boa bob boc boh boo bop bos bot bpa bpb bpc bph bpo bpp bps bpt bsa bsb bsc bsh bso bsp bss bst bta btb btc bth bto btp bts btt c-- caa cab cac cah cao cap cas cat cba cbb cbc cbh cbo cbp cbs cbt cca ccb ccc cch cco ccp ccs cct ch- cha chb chc chh cho chp chs cht co- coa cob coc coh coo cop cos cot cpa cpb cpc cph cpo cpp cps cpt csa csb csc csh cso csp css cst cta ctb ctc cth cto ctp cts ctt haa hab hac hah hao hap has hat hba hbb hbc hbh hbo hbp hbs hbt hca hcb hcc hch hco hcp hcs hct hha hhb hhc hhh hho hhp hhs hht hoa hob hoc hoh hoo hop hos hot hpa hpb hpc hph hpo hpp hps hpt hsa hsb hsc hsh hsp hss hst hta htb htc hth hto htp hts htt oaa oab oac oah oao oap oas oat ob- oba obb obc obh obo obp obs obt oc- oca ocb occ och oco ocp ocs oct oha ohc ohh oho ohp ohs oht oo- ooa oob ooc ooh ooo oop oos oot op- opa opb opc oph opo opp ops opt os- osa osb osc osh oso osp oss ost ot- ota otb otc oth oto otp ots ott p-p paa pab pac pah pao pap pas pat pba pbb pbc pbo pbp pbs pbt pca pcb pcc pch pco pcp pcs pct pha phb phc pho php phs pht poa pob poc poh poo pop pos pot ppa ppb ppc pph ppo ppp pps ppt ps- psa psb psc psh pso psp pss pst pt- pta ptb ptc pth pto ptp pts ptt saa sab sac sah sao sap sas sat sba sbb sbc sbh sbo sbp sbs sbt sca scb scc sch sco scp scs sct sh- sha shb shc shh sho shp shs sht soa sob soc soh soo sop sos sot spa spb spc sph spo spp sps spt ss- ssa ssb ssc ssh sso ssp sss sst sta stb stc sth sto stp sts stt taa tab tac tah tao tap tas tat tba tbb tbc tbh tbo tbp tbs tbt tca tcb tcc tch tco tcp tcs tct th- tha thb thc thh tho thp ths tht to- toa tob toc toh too top tos tot tpa tpb tpc tph tpo tpp tps tpt tsa tsb tsc tsh tso tsp tss tst tta ttb ttc tth tto ttp tts ttt