a-a a-b a-t aaa aab aad aan aao aap aar aas aat aax ab- aba abb abd abn abo abp abr abs abt abx ad- ada adb add adn ado adp adr ads adt adx an- ana anb and ann ano anp anr ans ant anx aoa aob aod aon aoo aop aor aos aot aox ap- apa apb apd apn apo app apr aps apt apx ar- ara arb ard arn aro arp arr ars art arx as- asa asb asd asn aso asp asr ass ast asx at- ata atb atd atn ato atp atr ats att atx ax- axa axn axo axp axr axs axt axx b-p baa bab bad ban bao bap bar bas bat bax bba bbb bbd bbn bbo bbp bbr bbs bbt bbx bda bdb bdd bdo bdp bdr bds bdt bdx bna bnb bnd bnn bno bnp bnr bns bnt bnx boa bob bod bon boo bop bor bos bot box bpa bpb bpd bpn bpo bpp bpr bps bpt bpx bra brb brd brn bro brp brr brs brt brx bsa bsb bsd bsn bso bsp bsr bss bst bsx bta btb btd btn bto btp btr bts btt btx bxb bxd bxn bxo bxx daa dab dad dan dao dap dar das dat dax dba dbb dbd dbn dbo dbp dbr dbs dbt dbx dda ddb ddd ddn ddo ddp ddr dds ddt ddx dna dnb dnd dnn dno dnp dnr dns dnt doa dob dod don doo dop dor dos dot dox dpa dpb dpd dpn dpo dpp dpr dps dpt dra drb drd drn dro drp drr drs drt drx dsa dsb dsd dsn dso dsp dsr dss dst dsx dta dtb dtd dtn dto dtp dtr dts dtt dtx dxd dxn dxo dxp dxr dxs dxt dxx naa nab nad nan nao nap nar nas nat nax nba nbb nbd nbn nbo nbp nbr nbs nbt nbx nda ndb ndd ndn ndo ndp ndr nds ndt nna nnb nnn nno nnp nns nnt no- noa nob nod non noo nop nor nos not nox npa npb npd npn npo npp npr nps npt nra nrb nrd nrn nro nrp nrr nrs nrt nrx nsa nsb nsd nsn nso nsp nsr nss nst nsx nta ntb ntd ntn nto ntp ntr nts ntt ntx nxd nxt oaa oab oad oan oao oap oar oas oat oax ob- oba obb obd obn obo obp obr obs obt obx oda odb odd odn odo odp odr ods odt on- ona onb ond onn ono onp onr ons ont onx oo- ooa oob ood oon ooo oop oor oos oot oox op- opa opb opd opn opo opp opr ops opt opx or- ora orb ord orn oro orp orr ors ort orx os- osa osb osd osn oso osp osr oss ost osx ot- ota otb otd otn oto otp otr ots ott ox- oxa oxb oxn oxo oxt oxx p-p paa pab pad pan pao pap par pas pat pax pba pbb pbd pbn pbo pbp pbr pbs pbt pbx pda pdb pdd pdn pdo pdp pdr pds pdt pdx pn- pna pnb pnd pnn pno pnp pnr pns pnt pnx poa pob pod pon poo pop por pos pot pox ppa ppb ppd ppn ppo ppp ppr pps ppt ppx pra prb prd prn pro prp prr prs prt prx ps- psa psb psd psn pso psp psr pss pst psx pt- pta ptb ptd ptn pto ptp ptr pts ptt ptx pxr pxs pxt ra- raa rab rad ran rao rap rar ras rat rax rba rbb rbd rbn rbo rbp rbr rbs rbt rbx rda rdb rdd rdn rdo rdp rdr rds rdt rdx rna rnb rnd rnn rno rnp rnr rns rnt roa rob rod ron roo rop ror ros rot rox rpa rpb rpd rpn rpo rpp rpr rps rpt rpx rra rrb rrd rrn rrp rrr rrs rrt rsa rsb rsd rsn rso rsp rsr rss rst rsx rta rtb rtd rtn rto rtp rtr rts rtt rtx rxp rxr rxs saa sab sad san sao sap sar sas sat sax sba sbb sbd sbn sbo sbp sbr sbs sbt sbx sda sdb sdd sdn sdo sdp sdr sds sdt sna snb snd snn sno snp snr sns snt soa sob sod son soo sop sor sos sot sox spa spb spd spn spo spp spr sps spt spx sr- sra srb srd srn sro srp srr srs srt srx ss- ssa ssb ssd ssn sso ssp ssr sss sst ssx sta stb std stn sto stp str sts stt stx sxn sxs sxt t-x taa tab tad tan tao tap tar tas tat tax tba tbb tbd tbn tbo tbp tbr tbs tbt tda tdb tdd tdn tdo tdp tdr tds tdt tdx tna tnb tnd tnn tno tnp tnr tns tnt tnx to- toa tob tod ton too top tor tos tot tox tpa tpb tpd tpn tpo tpp tpr tps tpt tpx tra trb trd trn tro trp trr trs trt trx tsa tsb tsd tsn tso tsp tsr tss tst tsx tta ttb ttd ttn tto ttp ttr tts ttt ttx txn txs txt xaa xad xan xap xar xas xat xbr xbx xda xdb xdr xds xdt xna xno xns xoa xod xon xoo xop xor xos xot xox xpa xpb xpd xpn xpo xpp xps xpt xrd xrt xrx xsa xsb xsp xss xst xtp xtr xts xtx xxo xxp xxx

-ana a-do aaaa aaab aaad aaan aaap aaar aaas aaba aabb aabd aabp aabt aada aads aadt aana aand aanp aaon aaoo aapa aapo aaps aapt aara aard aaro aarp aars aart aasa aasd aass aast aata aatt abaa abab abad aban abap abar abas abat abax abb- abba abbb abbo abbr abbs abbt abda abdo aboa abob abod abon aboo abor abos abot abox abpa abpd abpn abpp abpr abps abra abro abrs abs- absa absd absp abss abta abts adaa adab adad adan adao