-al a-a a-b a-c aaa aab aac aae aah aal aan aap ab- aba abb abc abe abh abl abn abp ac- aca acb acc ace ach acl acn acp aea aeb aec aee aeh ael aen aep aha ahb ahc ahe ahh ahl ahn ahp al- ala alb alc ale alh all aln alp an- ana anb anc ane anh anl ann anp ap- apa apb apc ape aph apl apn app b-p baa bab bac bae bah bal ban bap bba bbb bbc bbe bbh bbl bbn bbp bca bcb bcc bce bch bcl bcn bcp be- bea beb bec bee beh bel ben bep bha bhb bhc bhe bhh bhl bhp bla blb blc ble blh bll bln blp bna bnb bnc bne bnl bnn bnp bpa bpb bpc bpe bph bpl bpn bpp c-- caa cab cac cae cah cal can cap cba cbb cbc cbe cbh cbl cbn cbp cca ccb ccc cce cch ccl ccn ccp ce- cea ceb cec cee ceh cel cen cep ch- cha chb chc che chh chl chn chp cl- cla clb clc cle clh cll cln clp cn- cna cnb cnc cne cnh cnl cnn cnp cpa cpb cpc cpe cph cpl cpn cpp eaa eab eac eae eah eal ean eap eba ebb ebc ebe ebh ebl ebn ebp ec- eca ecb ecc ece ech ecl ecn eea eeb eec eee eel een eep eha ehb ehc ehe ehh ehl ehn ehp ela elb elc ele elh ell eln elp en- ena enb enc ene enh enl enn enp ep- epa epb epc epe eph epl epn epp haa hab hac hae hah hal han hap hba hbb hbc hbe hbh hbl hbn hbp hca hcb hcc hce hch hcl hcn hcp he- hea heb hec hee heh hel hen hep hha hhb hhc hhe hhh hhl hhn hhp hla hlb hlc hle hlh hll hln hlp hna hnb hnc hne hnh hnl hnn hpa hpb hpc hpe hph hpl hpn hpp l-p la- laa lab lac lae lah lal lan lap lba lbb lbc lbe lbh lbl lbp lca lcb lcc lce lch lcl lcn lcp lea leb lec lee leh lel len lep lha lhb lhc lhh lhp lla llb llc lle lll lln llp lna lnb lnc lne lnh lnl lnn lnp lpa lpb lpc lpe lph lpl lpn lpp naa nab nac nae nah nal nan nap nba nbb nbc nbe nbl nbn nbp nca ncb ncc nce nch ncl ncn ncp ne- nea neb nec nee neh nel nen nep nha nhb nhc nhe nhh nhl nhn nhp nla nlb nlc nle nlh nll nln nlp nna nnb nnc nne nnh nnl nnn nnp npa npb npc npe nph npl npn npp p-p paa pab pac pae pah pal pan pap pba pbb pbc pbe pbl pbn pbp pca pcb pcc pce pch pcl pcn pcp pea peb pec pee peh pel pen pep pha phb phc phe phl phn php pla plb plc ple plh pll pln plp pn- pna pnb pnc pne pnh pnl pnn pnp ppa ppb ppc ppe pph ppl ppn ppp