a-a a-b a-c aaa aab aac aae aah aan aap aas ab- aba abb abc abe abh abn abp abs ac- aca acb acc ace ach acn acp acs aea aeb aec aee aeh aen aep aes aha ahb ahc ahe ahh ahn ahp ahs an- ana anb anc ane anh ann anp ans ap- apa apb apc ape aph apn app aps as- asa asb asc ase ash asn asp ass b-p baa bab bac bae bah ban bap bas bba bbb bbc bbe bbh bbn bbp bbs bca bcb bcc bce bch bcn bcp bcs be- bea beb bec bee beh ben bep bes bha bhb bhc bhe bhh bhp bhs bna bnb bnc bne bnn bnp bns bpa bpb bpc bpe bph bpn bpp bps bsa bsb bsc bse bsh bsn bsp bss c-- caa cab cac cae cah can cap cas cba cbb cbc cbe cbh cbn cbp cbs cca ccb ccc cce cch ccn ccp ccs ce- cea ceb cec cee ceh cen cep ces ch- cha chb chc che chh chn chp chs cn- cna cnb cnc cne cnh cnn cnp cns cpa cpb cpc cpe cph cpn cpp cps csa csb csc cse csh csn csp css eaa eab eac eae eah ean eap eas eba ebb ebc ebe ebh ebn ebp ebs ec- eca ecb ecc ece ech ecn ecs eea eeb eec eee een eep ees eha ehb ehc ehe ehh ehn ehp ehs en- ena enb enc ene enh enn enp ens ep- epa epb epc epe eph epn epp eps es- esa esb esc ese esh esn esp ess haa hab hac hae hah han hap has hba hbb hbc hbe hbh hbn hbp hbs hca hcb hcc hce hch hcn hcp hcs he- hea heb hec hee heh hen hep hes hha hhb hhc hhe hhh hhn hhp hhs hna hnb hnc hne hnh hnn hns hpa hpb hpc hpe hph hpn hpp hps hsa hsb hsc hse hsh hsn hsp hss naa nab nac nae nah nan nap nas nba nbb nbc nbe nbn nbp nbs nca ncb ncc nce nch ncn ncp ncs ne- nea neb nec nee neh nen nep nes nha nhb nhc nhe nhh nhn nhp nhs nna nnb nnc nne nnh nnn nnp nns npa npb npc npe nph npn npp nps nsa nsb nsc nse nsh nsn nsp nss p-p paa pab pac pae pah pan pap pas pba pbb pbc pbe pbn pbp pbs pca pcb pcc pce pch pcn pcp pcs pea peb pec pee peh pen pep pes pha phb phc phe phn php phs pn- pna pnb pnc pne pnh pnn pnp pns ppa ppb ppc ppe pph ppn ppp pps ps- psa psb psc pse psh psn psp pss saa sab sac sae sah san sap sas sba sbb sbc sbe sbh sbn sbp sbs sca scb scc sce sch scn scp scs se- sea seb sec see seh sen sep ses sh- sha shb shc she shh shn shp shs sna snb snc sne snn snp sns spa spb spc spe sph spn spp sps ss- ssa ssb ssc sse ssh ssn ssp sss