a-a a-b a-i aaa aab aad aae aai aan aap aas ab- aba abb abd abe abi abn abp abs ad- ada adb add ade adi adn adp ads aea aeb aed aee aei aen aep aes ai- aia aib aid aie aii ain aip ais an- ana anb and ane ani ann anp ans ap- apa apb apd ape api apn app aps as- asa asb asd ase asi asn asp ass b-p baa bab bad bae bai ban bap bas bba bbb bbd bbe bbi bbn bbp bbs bda bdb bdd bde bdi bdp bds be- bea beb bed bee bei ben bep bes bi- bia bib bid bie bii bin bip bis bna bnb bnd bne bni bnn bnp bns bpa bpb bpd bpe bpi bpn bpp bps bsa bsb bsd bse bsi bsn bsp bss daa dab dad dae dai dan dap das dba dbb dbd dbe dbi dbn dbp dbs dda ddb ddd dde ddi ddn ddp dds de- dea deb ded dee dei den dep des di- dia dib did die dii din dip dis dna dnb dnd dne dni dnn dnp dns dpa dpb dpd dpe dpi dpn dpp dps dsa dsb dsd dse dsi dsn dsp dss eaa eab ead eae eai ean eap eas eba ebb ebd ebe ebi ebn ebp ebs ed- eda edb edd ede edi edn edp eds eea eeb eed eee een eep ees eia eib eid eie eii ein eip eis en- ena enb end ene eni enn enp ens ep- epa epb epd epe epi epn epp eps es- esa esb esd ese esi esn esp ess i-d ia- iaa iab iad iae iai ian iap ias iba ibb ibd ibe ibi ibn ibp ibs ida idb idd ide idi idn idp ids ie- iea ied iee iei ien iep ies iia iib iid iie iii iin iip iis in- ina inb ind ine ini inn inp ins ipa ipb ipd ipe ipi ipn ipp ips is- isa isb isd ise isi isn isp iss n-i naa nab nad nae nai nan nap nas nba nbb nbd nbe nbi nbn nbp nbs nda ndb ndd nde ndi ndn ndp nds ne- nea neb ned nee nei nen nep nes nia nib nid nie nii nin nip nis nna nnb nne nni nnn nnp nns npa npb npd npe npi npn npp nps nsa nsb nsd nse nsi nsn nsp nss p-p paa pab pad pae pai pan pap pas pba pbb pbd pbe pbi pbn pbp pbs pda pdb pdd pde pdi pdn pdp pds pea peb ped pee pei pen pep pes pia pib pid pie pii pin pip pis pn- pna pnb pnd pne pni pnn pnp pns ppa ppb ppd ppe ppi ppn ppp pps ps- psa psb psd pse psi psn psp pss saa sab sad sae sai san sap sas sba sbb sbd sbe sbi sbn sbp sbs sda sdb sdd sde sdi sdn sdp sds se- sea seb sed see sei sen sep ses sia sib sid sie sii sin sip sis sna snb snd sne sni snn snp sns spa spb spd spe spi spn spp sps ss- ssa ssb ssd sse ssi ssn ssp sss