a-a a-b a-i aaa aab aad aai aan aao aap aar aas aax ab- aba abb abd abi abn abo abp abr abs abx ad- ada adb add adi adn ado adp adr ads adx ai- aia aib aid aii ain aio aip air ais aix an- ana anb and ani ann ano anp anr ans anx aoa aob aod aoi aon aoo aop aor aos aox ap- apa apb apd api apn apo app apr aps apx ar- ara arb ard ari arn aro arp arr ars arx as- asa asb asd asi asn aso asp asr ass asx ax- axa axi axn axo axp axr axs axx b-p baa bab bad bai ban bao bap bar bas bax bba bbb bbd bbi bbn bbo bbp bbr bbs bbx bda bdb bdd bdi bdo bdp bdr bds bdx bi- bia bib bid bii bin bio bip bir bis bix bna bnb bnd bni bnn bno bnp bnr bns bnx boa bob bod boi bon boo bop bor bos box bpa bpb bpd bpi bpn bpo bpp bpr bps bpx bra brb brd bri brn bro brp brr brs brx bsa bsb bsd bsi bsn bso bsp bsr bss bsx bxb bxd bxi bxn bxo bxx daa dab dad dai dan dao dap dar das dax dba dbb dbd dbi dbn dbo dbp dbr dbs dbx dda ddb ddd ddi ddn ddo ddp ddr dds ddx di- dia dib did dii din dio dip dir dis dix dna dnb dnd dni dnn dno dnp dnr dns doa dob dod doi don doo dop dor dos dox dpa dpb dpd dpi dpn dpo dpp dpr dps dra drb drd dri drn dro drp drr drs drx dsa dsb dsd dsi dsn dso dsp dsr dss dsx dxd dxi dxn dxo dxp dxr dxs dxx i-d ia- iaa iab iad iai ian iao iap iar ias iba ibb ibd ibi ibn ibo ibp ibr ibs ibx ida idb idd idi idn ido idp idr ids idx iia iib iid iii iin iio iip iir iis iix in- ina inb ind ini inn ino inp inr ins inx io- ioa iob iod ioi ion ioo iop ior ios ipa ipb ipd ipi ipn ipo ipp ipr ips ipx ir- ira irb ird iri irn iro irp irr irs irx is- isa isb isd isi isn iso isp isr iss ixi ixn n-i naa nab nad nai nan nao nap nar nas nax nba nbb nbd nbi nbn nbo nbp nbr nbs nbx nda ndb ndd ndi ndn ndo ndp ndr nds nia nib nid nii nin nio nip nir nis nix nna nnb nni nnn nno nnp nns no- noa nob nod noi non noo nop nor nos nox npa npb npd npi npn npo npp npr nps nra nrb nrd nri nrn nro nrp nrr nrs nrx nsa nsb nsd nsi nsn nso nsp nsr nss nsx nxd o-i oaa oab oad oai oan oao oap oar oas oax ob- oba obb obd obi obn obo obp obr obs obx oda odb odd odi odn odo odp odr ods oia oib oid oii oin oio oip oir ois on- ona onb ond oni onn ono onp onr ons onx oo- ooa oob ood ooi oon ooo oop oor oos oox op- opa opb opd opi opn opo opp opr ops opx or- ora orb ord ori orn oro orp orr ors orx os- osa osb osd osi osn oso osp osr oss osx ox- oxa oxb oxi oxn oxo oxx p-p paa pab pad pai pan pao pap par pas pax pba pbb pbd pbi pbn pbo pbp pbr pbs pbx pda pdb pdd pdi pdn pdo pdp pdr pds pdx pia pib pid pii pin pio pip pir pis pix pn- pna pnb pnd pni pnn pno pnp pnr pns pnx poa pob pod poi pon poo pop por pos pox ppa ppb ppd ppi ppn ppo ppp ppr pps ppx pra prb prd pri prn pro prp prr prs prx ps- psa psb psd psi psn pso psp psr pss psx pxr pxs ra- raa rab rad rai ran rao rap rar ras rax rba rbb rbd rbi rbn rbo rbp rbr rbs rbx rda rdb rdd rdi rdn rdo rdp rdr rds rdx ria rib rid rii rin rio rip rir ris rix rna rnb rnd rni rnn rno rnp rnr rns roa rob rod roi ron roo rop ror ros rox rpa rpb rpd rpi rpn rpo rpp rpr rps rpx rra rrb rrd rri rrn rrp rrr rrs rsa rsb rsd rsi rsn rso rsp rsr rss rsx rxp rxr rxs saa sab sad sai san sao sap sar sas sax sba sbb sbd sbi sbn sbo sbp sbr sbs sbx sda sdb sdd sdi sdn sdo sdp sdr sds sia sib sid sii sin sio sip sir sis six sna snb snd sni snn sno snp snr sns soa sob sod soi son soo sop sor sos sox spa spb spd spi spn spo spp spr sps spx sr- sra srb srd sri srn sro srp srr srs srx ss- ssa ssb ssd ssi ssn sso ssp ssr sss ssx sxi sxn sxs xaa xad xan xap xar xas xbr xbx xda xdb xdi xdr xds xia xii xin xio xis xix xna xno xns xoa xod xoi xon xoo xop xor xos xox xpa xpb xpd xpn xpo xpp xps xrd xrx xsa xsb xsi xsp xss xxi xxo xxp xxx