a-a a-c aaa aac aaf aao aap aar aas ac- aca acc acf aco acp acr acs af- afa afc aff afo afp afr afs aoa aoc aof aoo aop aor aos ap- apa apc apf apo app apr aps ar- ara arc arf aro arp arr ars as- asa asc asf aso asp asr ass c-- caa cac caf cao cap car cas cca ccc ccf cco ccp ccr ccs cfa cfc cff cfo cfp cfr cfs co- coa coc cof coo cop cor cos cpa cpc cpf cpo cpp cpr cps cra crc crf cro crp crr crs csa csc csf cso csp csr css faa fac faf fao fap far fas fca fcc fcf fco fcp fcr fcs ffa ffc fff ffo ffp ffr ffs foa foc fof foo fop for fos fpa fpc fpo fpp fpr fps fra frc frf fro frp frr frs fsa fsc fsf fso fsp fsr fss oaa oac oaf oao oap oar oas oc- oca occ ocf oco ocp ocr ocs of- ofa ofc off ofo ofp ofr ofs oo- ooa ooc oof ooo oop oor oos op- opa opc opf opo opp opr ops or- ora orc orf oro orp orr ors os- osa osc osf oso osp osr oss p-p paa pac paf pao pap par pas pca pcc pcf pco pcp pcr pcs pfa pfc pff pfo pfp pfr pfs poa poc pof poo pop por pos ppa ppc ppf ppo ppp ppr pps pra prc prf pro prp prr prs ps- psa psc psf pso psp psr pss ra- raa rac raf rao rap rar ras rca rcc rcf rco rcp rcr rcs rfa rfc rff rfo rfp rfr rfs roa roc rof roo rop ror ros rpa rpc rpf rpo rpp rpr rps rra rrc rrf rrp rrr rrs rsa rsc rsf rso rsp rsr rss saa sac saf sao sap sar sas sca scc scf sco scp scr scs sfa sfc sff sfo sfp sfr sfs soa soc sof soo sop sor sos spa spc spf spo spp spr sps sr- sra src srf sro srp srr srs ss- ssa ssc ssf sso ssp ssr sss

aaaa aaac aaaf aaap aaar aaas aaca aacc aacf aaco aacp aacr aacs aafa aafc aaff aaoo aapa aapc aapo aaps aara aarc aaro aarp aars aasa aasc aasf aass acaa acac acap acar acas acca accc accf acco accp accs acfc acfs acoa acop acor acos acpa acpr acps acr- acra acrc acro acrr acrs acsa acsc acss afaa afao afap afar afca afcc afcs affa affc affo affs afoa afoo afor afpa afpc afr- afra afrc afro afrs afsa afsc afsp aoca aocs aopo aora aors aosp aoss apac apao apap apar apas apca apcc apco apcr apcs apfa apfc apfo apo- apoc apof apoo apop apor apos appa appc appr apps apra aprc apro aprs apsa apso apss arac araf arap arar aras arc- arca arco arcs arfa arfc arff arfs aroa aroo aror aros arpa arps arr- arra arrc arro arrr arrs ars- arsa arsc arso asaa asac asaf asao asap asar asas asc- asca ascc asco ascp ascr asfa asoc asof asop asor asos aspa aspc aspo aspr asps asra asrc asro asrs assa assc asso assp assr asss caaa caac caaf caap caas cac- caca cacc caco cacr cafa cafc caff cafs caor caos capa capc capo capp caps cara carc carf caro carp carr cars casa casc caso casp casr cass ccaa ccac ccaf ccap ccar ccas ccca cccc cccf cccp cccs ccfa ccfc ccff ccoc ccpa ccpp ccpr ccps ccra ccrc ccrf ccrp ccrs ccsa ccsf ccsp ccss cfaa cfac cfao cfar cfca cfcf cfco cfcs cffr cfoa cfor cfos cfpa cfpo cfpr cfps cfra cfrp cfsa coas coca coco cocp cofc coff cofs coof coop coos copa copo copp copr cops cor- cora corc corf coro corp corr cors cosa cosc coso cosp coss cpaa cpac cpaf cpap cpas cpca cpcs cpff cpos cppa cpps cprs cpsa cpsc cpso cpsr crac craf crap crar cras crca crcc crcr crfc crfs croc croo crop cror crpc crps crsa crsp crss csaa csac csao csar csas cscc cscf csco cscr cscs csfc csfr csor csos cspa cspc csps csra csrc csrs cssa cssr faaa faac faap faas faca facc facp facs fafa fafc faff fafo fapa fapp faps fara farc faro farp farr fars fasa fasc faso fass fcap fcar fcas fcca fccf fccp fcpa fcps fcra fcsc ffar ffcc ffff ffps ffrr ffsa ffss foaf foar foca foco focs fofo foof foos fopp fops for- fora foro forr fors fosa foso foss fp-c fpaa fpas fpcc fpra fprf frac frap fras frcc frcp frfc frop fros frps frsc frso fsas fscc fsfo fspc fspf fsra fssa fssc fssf fssp oafc oafo oafs oaps oara oars oasc oass ocac ocap ocas occa occc ocfa ocfp ocos ocpa ocpp ocra ocro ocrr ocrs ocsa ofas ofcr off- offa offc offo offr offs ofor ofra ooaa oocr ooff oofs oooo ooos oops oora oosa opap opar opca opo- opor opos oppa oppo opps opra opsa orac orao orar oras orca orco orcs orff orfs oro- orof oror oros orpc orps orra orro orrs orsa orso osaf osap osar osas osca oscc osco osfa osoo osor osos osro ossa osso paap paar paas paca paco pacs pafa pafc paff paoc paos papa papp papr paps par- para parc parf paro parp parr pars pasa pasc paso pasp pass pcaa pcaf pcap pcas pcca pccc pccs pcfc pcoa pcos pcpp pcps pcra pcrc pcrf pcsa pcso pfaa pfas pfcs pfff pffr pfps pfra poar poas poca poco pocs poff poof poop poor poos pop- popa popc popo popp pops pora porc poro porr pors posa poso poss ppac ppap ppar ppcc ppcs ppfa ppoa ppos pppa pppo pppp ppps pprc pprf ppsf ppss prao prar pras prca prcc prcf prcp prcs prfc prfs pro- proa proc prof proo prop pros prps prrs prsa prsc prso prss