a-a a-c a-t aaa aac aaf aao aap aas aat aax ac- aca acc acf aco acp acs act acx af- afa afc aff afo afp afs aft afx aoa aoc aof aoo aop aos aot aox ap- apa apc apf apo app aps apt apx as- asa asc asf aso asp ass ast asx at- ata atc atf ato atp ats att atx ax- axa axo axp axs axt axx c-- caa cac caf cao cap cas cat cax cca ccc ccf cco ccp ccs cct ccx cfa cfc cff cfo cfp cfs cft cfx co- coa coc cof coo cop cos cot cox cpa cpc cpf cpo cpp cps cpt cpx csa csc csf cso csp css cst csx cta ctc ctf cto ctp cts ctt ctx cxc cxf cxo cxp cxs cxt cxx faa fac faf fao fap fas fat fax fca fcc fcf fco fcp fcs fct fcx ffa ffc fff ffo ffp ffs fft ffx foa foc fof foo fop fos fot fox fpa fpc fpo fpp fps fpt fpx fsa fsc fsf fso fsp fss fst fsx fta ftc ftf fto ftp fts ftt ftx fxp fxs fxt fxx oaa oac oaf oao oap oas oat oax oc- oca occ ocf oco ocp ocs oct ocx of- ofa ofc off ofo ofp ofs oft ofx oo- ooa ooc oof ooo oop oos oot oox op- opa opc opf opo opp ops opt opx os- osa osc osf oso osp oss ost osx ot- ota otc otf oto otp ots ott ox- oxa oxc oxf oxo oxt oxx p-p paa pac paf pao pap pas pat pax pca pcc pcf pco pcp pcs pct pcx pfa pfc pff pfo pfp pfs pft pfx poa poc pof poo pop pos pot pox ppa ppc ppf ppo ppp pps ppt ppx ps- psa psc psf pso psp pss pst psx pt- pta ptc ptf pto ptp pts ptt ptx pxc pxs pxt saa sac saf sao sap sas sat sax sca scc scf sco scp scs sct scx sfa sfc sff sfo sfp sfs sft sfx soa soc sof soo sop sos sot sox spa spc spf spo spp sps spt spx ss- ssa ssc ssf sso ssp sss sst ssx sta stc stf sto stp sts stt stx sxc sxs sxt t-x taa tac taf tao tap tas tat tax tca tcc tcf tco tcp tcs tct tcx tfa tfc tff tfo tfp tfs tft tfx to- toa toc tof too top tos tot tox tpa tpc tpf tpo tpp tps tpt tpx tsa tsc tsf tso tsp tss tst tsx tta ttc ttf tto ttp tts ttt ttx txf txs txt xaa xac xaf xap xas xat xcf xcp xcx xfa xfs xft xfx xoa xoc xof xoo xop xos xot xox xpa xpc xpf xpo xpp xps xpt xsa xsc xsp xss xst xtc xtf xtp xts xtx xxo xxp xxx

aaaa aaac aaaf aaap aaas aaca aacc aacf aaco aacp aacs aact aafa aafc aaff aaoo aapa aapc aapo aaps aapt aasa aasc aasf aass aast aata aatc aatf aatt ac-t acaa acac acap acas acat acca accc accf acco accp accs acct acfc acfs acft acoa acop acos acot acpa acps acpt acsa acsc acss acst acta actc actf acto acts actt afaa afao afap afat afca afcc afcs affa affc affo affs afft afoa afoo afox afpa afpc afsa afsc afsp afst afta aftc aftp afts aoca aocs aopo aosp aoss aotc aotf apac apao apap apas apat apax apca apcc apco apcs apfa apfc apfo apft apo- apoc apof apoo apop apos apot apox appa appc apps appt appx apsa apso apss apta aptc apts aptt aptx apxs asaa asac asaf asao asap asas asat asc- asca ascc asco ascp asct ascx asfa asoc asof asop asos asot aspa aspc aspo asps aspt assa assc asso assp asss asst asta astc asto astp asts at-t at-x ataa atac atap atas atat atax atca atcc atcf atco atcs atfc atfs atoc atof atop atos atot atsc atst atta atto attp atts axaf axat axfs axo- axoa axof axos axps axto axxo caaa caac caaf caap caas caat cac- caca cacc caco cafa cafc caff cafs caos capa capc capo capp caps capt capx casa casc caso casp cass cast cat- cata catc catf cato cats catt caxa ccaa ccac ccaf ccap ccas ccat ccca cccc cccf cccp cccs ccfa ccfc ccff ccoc ccpa ccpp ccps ccsa ccsf ccsp ccss ccst cctc cctt cfaa cfac cfao cfax cfca cfcf cfco cfcs cfoa cfos cfox cfpa cfpo cfps cfsa cfsx cfta cftc coas coat coax coca coco cocp coct cofc coff cofs coft coof coop coos coot copa copo copp cops copt cosa cosc coso cosp coss cost cota cotc coto cots cott coxa cpaa cpac cpaf cpap cpas cpca cpcs cpff cpft cpos cpox cppa cpps cpsa cpsc cpso cpsx cptp cpts csaa csac csao csas csat cscc cscf csco cscs csfc csos csot csox cspa cspc csps cspt cssa csta cstc csto csts cstx csxt ctca ctcf ctcp ctfc ctfo ctfs ctos ctot ctpo ctpp ctps ctsa ctsc ctss ctta ctts cxfs cxpo cxxx faaa faac faap faas faca facc facp facs fact fafa fafc faff fafo fapa fapp faps fasa fasc faso fass fast fata fatc fatf fato fats fatt fcap fcas fcat fcca fccf fccp fcot fcpa fcps fcsc fcst fcto ffcc ffff ffps ffsa ffss fftf foaf foca foco focs fofo foof foos foot fopp fops fosa foso foss fost fota foto fotp fots fott foxx fp-c fpaa fpas fpcc fpct fsas fscc fsfo fspc fspf fssa fssc fssf fssp fsta ft-c ftfc ftop ftos ftps ftsa fxsp oafc oafo oafs oaps oasc oass oast oats ocac ocap ocas ocat occa occc occt ocfa ocfp ocos ocpa ocpp ocsa oct- octa octo octs ofas off- offa offc offo offs ofst ofta oftp ooaa ooff oofs oooo ooos oops oosa oost ootp oots opap opca opo- opos oppa oppo