a-a a-c aaa aac aaf aah aak aao aap aas ac- aca acc acf ach ack aco acp acs af- afa afc aff afh afk afo afp afs aha ahc ahf ahh ahk aho ahp ahs aka akc akh akk ako akp aks aoa aoc aof aoh aok aoo aop aos ap- apa apc apf aph apk apo app aps as- asa asc asf ash ask aso asp ass c-- caa cac caf cah cak cao cap cas cca ccc ccf cch cck cco ccp ccs cfa cfc cff cfh cfk cfo cfp cfs ch- cha chc chf chh chk cho chp chs cka ckc ckh cko cks co- coa coc cof coh cok coo cop cos cpa cpc cpf cph cpk cpo cpp cps csa csc csf csh csk cso csp css faa fac faf fah fak fao fap fas fca fcc fcf fck fco fcp fcs ffa ffc fff ffh ffk ffo ffp ffs fha fhc fhf fhh fho fhp fhs fka fkc fkf fkk fkp foa foc fof foh fok foo fop fos fpa fpc fph fpk fpo fpp fps fsa fsc fsf fsh fsk fso fsp fss haa hac haf hah hak hao hap has hca hcc hcf hch hck hco hcp hcs hfa hfc hff hfh hfk hfo hfp hfs hha hhc hhf hhh hhk hho hhp hhs hka hkf hkh hkk hko hkp hks hoa hoc hof hoh hok hoo hop hos hpa hpc hpf hph hpk hpo hpp hps hsa hsc hsf hsh hsk hsp hss ka- kaa kac kaf kah kak kao kap kas kca kcc kch kck kcp kcs kfa kfc kff kfh kfo kfs kha khf khh khk kho khs kkc kkh kkk kkp kks koa koc kof koh kok koo kop kos kpa kpc kpf kph kpk kpo kpp kps ksa ksc ksf ksh ksk kso ksp kss oaa oac oaf oah oak oao oap oas oc- oca occ ocf och ock oco ocp ocs of- ofa ofc off ofo ofp ofs oha ohc ohf ohh oho ohp ohs oka okc okk oko okp oks oo- ooa ooc oof ooh ook ooo oop oos op- opa opc opf oph opk opo opp ops os- osa osc osf osh osk oso osp oss p-p paa pac paf pah pak pao pap pas pca pcc pcf pch pck pco pcp pcs pfa pfc pff pfk pfo pfp pfs pha phc phf phk pho php phs pka pkc pkf pko pkp pks poa poc pof poh pok poo pop pos ppa ppc ppf pph ppk ppo ppp pps ps- psa psc psf psh psk pso psp pss saa sac saf sah sak sao sap sas sca scc scf sch sck sco scp scs sfa sfc sff sfh sfk sfo sfp sfs sh- sha shc shf shh shk sho shp shs sk- ska skc skf skh skk sko skp sks soa soc sof soh sok soo sop sos spa spc spf sph spk spo spp sps ss- ssa ssc ssf ssh ssk sso ssp sss