-al a-a a-b a-c aaa aab aac aae aaf aah aal aap ab- aba abb abc abe abf abh abl abp ac- aca acb acc ace acf ach acl acp aea aeb aec aee aef aeh ael aep af- afa afb afc afe aff afh afl afp aha ahb ahc ahe ahf ahh ahl ahp al- ala alb alc ale alf alh all alp ap- apa apb apc ape apf aph apl app b-p baa bab bac bae baf bah bal bap bba bbb bbc bbe bbf bbh bbl bbp bca bcb bcc bce bcf bch bcl bcp be- bea beb bec bee bef beh bel bep bfa bfb bfc bfe bff bfh bfl bfp bha bhb bhc bhe bhf bhh bhl bhp bla blb blc ble blf blh bll blp bpa bpb bpc bpe bpf bph bpl bpp c-- caa cab cac cae caf cah cal cap cba cbb cbc cbe cbf cbh cbl cbp cca ccb ccc cce ccf cch ccl ccp ce- cea ceb cec cee cef ceh cel cep cfa cfb cfc cfe cff cfh cfl cfp ch- cha chb chc che chf chh chl chp cl- cla clb clc cle clf clh cll clp cpa cpb cpc cpe cpf cph cpl cpp eaa eab eac eae eaf eah eal eap eba ebb ebc ebe ebf ebh ebl ebp ec- eca ecb ecc ece ecf ech ecl eea eeb eec eee eef eel eep ef- efa efb efc efe eff efh efl efp eha ehb ehc ehe ehf ehh ehl ehp ela elb elc ele elf elh ell elp ep- epa epb epc epe epf eph epl epp faa fab fac fae faf fah fal fap fba fbb fbc fbe fbf fbh fbl fbp fca fcb fcc fce fcf fcl fcp fea feb fec fee fef feh fel fep ffa ffc ffe fff ffh ffl ffp fha fhb fhc fhe fhf fhh fhl fhp fla flb flc fle flf fll flp fpa fpb fpc fpe fph fpl fpp haa hab hac hae haf hah hal hap hba hbb hbc hbe hbf hbh hbl hbp hca hcb hcc hce hcf hch hcl hcp he- hea heb hec hee hef heh hel hep hfa hfb hfc hfe hff hfh hfl hfp hha hhb hhc hhe hhf hhh hhl hhp hla hlb hlc hle hlf hlh hll hlp hpa hpb hpc hpe hpf hph hpl hpp l-p la- laa lab lac lae laf lah lal lap lba lbb lbc lbe lbf lbh lbl lbp lca lcb lcc lce lcf lch lcl lcp lea leb lec lee lef leh lel lep lfa lfb lfc lfe lff lfh lfl lfp lha lhb lhc lhf lhh lhp lla llb llc lle llf lll llp lpa lpb lpc lpe lpf lph lpl lpp p-p paa pab pac pae paf pah pal pap pba pbb pbc pbe pbf pbl pbp pca pcb pcc pce pcf pch pcl pcp pea peb pec pee pef peh pel pep pfa pfb pfc pfe pff pfl pfp pha phb phc phe phf phl php pla plb plc ple plf plh pll plp ppa ppb ppc ppe ppf pph ppl ppp