a-a a-b a-i aaa aab aad aai aan aao aap aas ab- aba abb abd abi abn abo abp abs ad- ada adb add adi adn ado adp ads ai- aia aib aid aii ain aio aip ais an- ana anb and ani ann ano anp ans aoa aob aod aoi aon aoo aop aos ap- apa apb apd api apn apo app aps as- asa asb asd asi asn aso asp ass b-p baa bab bad bai ban bao bap bas bba bbb bbd bbi bbn bbo bbp bbs bda bdb bdd bdi bdo bdp bds bi- bia bib bid bii bin bio bip bis bna bnb bnd bni bnn bno bnp bns boa bob bod boi bon boo bop bos bpa bpb bpd bpi bpn bpo bpp bps bsa bsb bsd bsi bsn bso bsp bss daa dab dad dai dan dao dap das dba dbb dbd dbi dbn dbo dbp dbs dda ddb ddd ddi ddn ddo ddp dds di- dia dib did dii din dio dip dis dna dnb dnd dni dnn dno dnp dns doa dob dod doi don doo dop dos dpa dpb dpd dpi dpn dpo dpp dps dsa dsb dsd dsi dsn dso dsp dss i-d ia- iaa iab iad iai ian iao iap ias iba ibb ibd ibi ibn ibo ibp ibs ida idb idd idi idn ido idp ids iia iib iid iii iin iio iip iis in- ina inb ind ini inn ino inp ins io- ioa iob iod ioi ion ioo iop ios ipa ipb ipd ipi ipn ipo ipp ips is- isa isb isd isi isn iso isp iss n-i naa nab nad nai nan nao nap nas nba nbb nbd nbi nbn nbo nbp nbs nda ndb ndd ndi ndn ndo ndp nds nia nib nid nii nin nio nip nis nna nnb nni nnn nno nnp nns no- noa nob nod noi non noo nop nos npa npb npd npi npn npo npp nps nsa nsb nsd nsi nsn nso nsp nss o-i oaa oab oad oai oan oao oap oas ob- oba obb obd obi obn obo obp obs oda odb odd odi odn odo odp ods oia oib oid oii oin oio oip ois on- ona onb ond oni onn ono onp ons oo- ooa oob ood ooi oon ooo oop oos op- opa opb opd opi opn opo opp ops os- osa osb osd osi osn oso osp oss p-p paa pab pad pai pan pao pap pas pba pbb pbd pbi pbn pbo pbp pbs pda pdb pdd pdi pdn pdo pdp pds pia pib pid pii pin pio pip pis pn- pna pnb pnd pni pnn pno pnp pns poa pob pod poi pon poo pop pos ppa ppb ppd ppi ppn ppo ppp pps ps- psa psb psd psi psn pso psp pss saa sab sad sai san sao sap sas sba sbb sbd sbi sbn sbo sbp sbs sda sdb sdd sdi sdn sdo sdp sds sia sib sid sii sin sio sip sis sna snb snd sni snn sno snp sns soa sob sod soi son soo sop sos spa spb spd spi spn spo spp sps ss- ssa ssb ssd ssi ssn sso ssp sss