-er a-a a-c aaa aac aae aaf aah aak aan aap aar ac- aca acc ace acf ach ack acn acp acr aea aec aee aef aeh aek aen aep aer af- afa afc afe aff afh afk afn afp afr aha ahc ahe ahf ahh ahk ahn ahp ahr aka akc ake akh akk akn akp akr an- ana anc ane anf anh ank ann anp anr ap- apa apc ape apf aph apk apn app apr ar- ara arc are arf arh ark arn arp arr c-- caa cac cae caf cah cak can cap car cca ccc cce ccf cch cck ccn ccp ccr ce- cea cec cee cef ceh cek cen cep cer cfa cfc cfe cff cfh cfk cfn cfp cfr ch- cha chc che chf chh chk chn chp chr cka ckc ckh cn- cna cnc cne cnf cnh cnn cnp cnr cpa cpc cpe cpf cph cpk cpn cpp cpr cra crc cre crf crh crk crn crp crr eaa eac eae eaf eah eak ean eap ear ec- eca ecc ece ecf ech eck ecn ecr eea eec eee eef eek een eep eer ef- efa efc efe eff efh efp efr eha ehc ehe ehf ehh ehn ehp ehr eka ekc eke ekf ekh ekp ekr en- ena enc ene enf enh enk enn enp enr ep- epa epc epe epf eph epn epp epr era erc ere erf erh erk ern erp err faa fac fae faf fah fak fan fap far fca fcc fce fcf fck fcn fcp fcr fea fec fee fef feh fek fen fep fer ffa ffc ffe fff ffh ffk ffn ffp ffr fha fhc fhe fhf fhh fhn fhp fhr fka fkc fkf fkk fkp fna fnc fne fnf fnh fnk fnn fnp fnr fpa fpc fpe fph fpk fpn fpp fpr fra frc fre frf frh frk frn frp frr haa hac hae haf hah hak han hap har hca hcc hce hcf hch hck hcn hcp hcr he- hea hec hee hef heh hek hen hep her hfa hfc hfe hff hfh hfk hfn hfp hfr hha hhc hhe hhf hhh hhk hhn hhp hhr hka hkf hkh hkk hkn hkp hkr hna hnc hne hnf hnh hnk hnn hpa hpc hpe hpf hph hpk hpn hpp hpr hr- hra hrc hre hrf hrh hrk hrn hrp hrr ka- kaa kac kae kaf kah kak kan kap kar kca kcc kce kch kck kcn kcp kcr ke- kea kec kee kef keh kek ken kep ker kfa kfc kff kfh kha khe khf khh khk khn khr kkc kke kkh kkk kkn kkp kkr kn- kna knc kne knf knk knn knp knr kpa kpc kpe kpf kph kpk kpn kpp kpr kra krc krf krk krn krp krr naa nac nae naf nah nak nan nap nar nca ncc nce ncf nch nck ncn ncp ncr ne- nea nec nee nef neh nek nen nep ner nfa nfc nfe nff nfk nfn nfp nfr nha nhc nhe nhf nhh nhk nhn nhp nhr nka nkc nke nkf nkk nkn nkp nkr nna nnc nne nnf nnh nnk nnn nnp npa npc npe npf nph npn npp npr nra nrc nre nrf nrk nrn nrp nrr p-p paa pac pae paf pah pak pan pap par pca pcc pce pcf pch pck pcn pcp pcr pea pec pee pef peh pek pen pep per pfa pfc pfe pff pfk pfn pfp pfr pha phc phe phf phk phn php phr pka pkc pke pkf pkn pkp pkr pn- pna pnc pne pnf pnh pnk pnn pnp pnr ppa ppc ppe ppf pph ppk ppn ppp ppr pra prc pre prf prh prk prn prp prr ra- raa rac rae raf rah rak ran rap rar rca rcc rce rcf rch rcn rcp rcr re- rea rec ree ref reh rek ren rep rer rfa rfc rfe rff rfh rfk rfn rfp rfr rh- rha rhc rhe rhf rhh rhn rhp rhr rkc rke rkf rkk rkp rna rnc rnh rnn rnp rnr rpa rpc rpe rpf rph rpk rpn rpp rpr rra rrc rrf rrh rrk rrn rrp rrr