a-a a-b aaa aab aae aah aak aao aap aas ab- aba abb abe abh abk abo abp abs aea aeb aee aeh aek aeo aep aes aha ahb ahe ahh ahk aho ahp ahs aka akb ake akh akk ako akp aks aoa aob aoe aoh aok aoo aop aos ap- apa apb ape aph apk apo app aps as- asa asb ase ash ask aso asp ass b-p baa bab bae bah bak bao bap bas bba bbb bbe bbh bbk bbo bbp bbs be- bea beb bee beh bek beo bep bes bha bhb bhe bhh bhk bho bhp bhs bka bkb bke bkk bko bkp bks boa bob boe boh bok boo bop bos bpa bpb bpe bph bpo bpp bps bsa bsb bse bsh bsk bso bsp bss eaa eab eae eah eak eao eap eas eba ebb ebe ebh ebk ebo ebp ebs eea eeb eee eek eeo eep ees eha ehb ehe ehh eho ehp ehs eka ekb eke ekh eko ekp eks eo- eoa eob eoe eoh eok eoo eop eos ep- epa epb epe eph epo epp eps es- esa esb ese esh esk eso esp ess haa hab hae hah hak hao hap has hba hbb hbe hbh hbk hbo hbp hbs he- hea heb hee heh hek heo hep hes hha hhb hhe hhh hhk hho hhp hhs hka hkb hkh hkk hko hkp hks hoa hob hoe hoh hok hoo hop hos hpa hpb hpe hph hpk hpo hpp hps hsa hsb hse hsh hsk hsp hss ka- kaa kab kae kah kak kao kap kas kba kbb kbe kbh kbk kbo kbp kbs ke- kea keb kee keh kek keo kep kes kha khe khh khk kho khs kkb kke kkh kkk kkp kks koa kob koe koh kok koo kop kos kpa kpe kph kpk kpo kpp kps ksa ksb kse ksh ksk kso ksp kss oaa oab oae oah oak oao oap oas ob- oba obb obe obh obk obo obp obs oea oeb oee oeh oeo oep oes oha ohe ohh oho ohp ohs oka okb oke okk oko okp oks oo- ooa oob ooh ook ooo oop oos op- opa opb ope oph opk opo opp ops os- osa osb ose osh osk oso osp oss p-p paa pab pae pah pak pao pap pas pba pbb pbe pbk pbo pbp pbs pea peb pee peh pek peo pep pes pha phb phe phk pho php phs pka pkb pke pko pkp pks poa pob poe poh pok poo pop pos ppa ppb ppe pph ppk ppo ppp pps ps- psa psb pse psh psk pso psp pss saa sab sae sah sak sao sap sas sba sbb sbe sbh sbk sbo sbp sbs se- sea seb see seh sek seo sep ses sh- sha shb she shh shk sho shp shs sk- ska skb ske skh skk sko skp sks soa sob soe soh sok soo sop sos spa spb spe sph spk spo spp sps ss- ssa ssb sse ssh ssk sso ssp sss