a-a a-c aaa aac aae aaf aah aak aan aas ac- aca acc ace acf ach ack acn acs aea aec aee aef aeh aek aen aes af- afa afc afe aff afh afk afn afs aha ahc ahe ahf ahh ahk ahn ahs aka akc ake akh akk akn aks an- ana anc ane anf anh ank ann ans as- asa asc ase asf ash ask asn ass c-- caa cac cae caf cah cak can cas cca ccc cce ccf cch cck ccn ccs ce- cea cec cee cef ceh cek cen ces cfa cfc cfe cff cfh cfk cfn cfs ch- cha chc che chf chh chk chn chs cka ckc ckh cks cn- cna cnc cne cnf cnh cnn cns csa csc cse csf csh csk csn css eaa eac eae eaf eah eak ean eas ec- eca ecc ece ecf ech eck ecn ecs eea eec eee eef eek een ees ef- efa efc efe eff efh efs eha ehc ehe ehf ehh ehn ehs eka ekc eke ekf ekh eks en- ena enc ene enf enh enk enn ens es- esa esc ese esf esh esk esn ess faa fac fae faf fah fak fan fas fca fcc fce fcf fck fcn fcs fea fec fee fef feh fek fen fes ffa ffc ffe fff ffh ffk ffn ffs fha fhc fhe fhf fhh fhn fhs fka fkc fkf fkk fna fnc fne fnf fnh fnk fnn fns fsa fsc fse fsf fsh fsk fsn fss haa hac hae haf hah hak han has hca hcc hce hcf hch hck hcn hcs he- hea hec hee hef heh hek hen hes hfa hfc hfe hff hfh hfk hfn hfs hha hhc hhe hhf hhh hhk hhn hhs hka hkf hkh hkk hkn hks hna hnc hne hnf hnh hnk hnn hns hsa hsc hse hsf hsh hsk hsn hss ka- kaa kac kae kaf kah kak kan kas kca kcc kce kch kck kcn kcs ke- kea kec kee kef keh kek ken kes kfa kfc kff kfh kfs kha khe khf khh khk khn khs kkc kke kkh kkk kkn kks kn- kna knc kne knf knk knn ksa ksc kse ksf ksh ksk ksn kss naa nac nae naf nah nak nan nas nca ncc nce ncf nch nck ncn ncs ne- nea nec nee nef neh nek nen nes nfa nfc nfe nff nfk nfn nfs nha nhc nhe nhf nhh nhk nhn nhs nka nkc nke nkf nkk nkn nks nna nnc nne nnf nnh nnk nnn nns nsa nsc nse nsf nsh nsk nsn nss saa sac sae saf sah sak san sas sca scc sce scf sch sck scn scs se- sea sec see sef seh sek sen ses sfa sfc sfe sff sfh sfk sfn sfs sh- sha shc she shf shh shk shn shs sk- ska skc ske skf skh skk sks sna snc sne snf snk snn sns ss- ssa ssc sse ssf ssh ssk ssn sss