-er a-a a-i aaa aae aaf aai aak aan aap aar aea aee aef aei aek aen aep aer af- afa afe aff afi afk afn afp afr ai- aia aie aif aii aik ain aip air aka ake aki akk akn akp akr an- ana ane anf ani ank ann anp anr ap- apa ape apf api apk apn app apr ar- ara are arf ari ark arn arp arr eaa eae eaf eai eak ean eap ear eea eee eef eek een eep eer ef- efa efe eff efi efp efr eia eie eif eii eik ein eip eir eka eke ekf eki ekp ekr en- ena ene enf eni enk enn enp enr ep- epa epe epf epi epn epp epr era ere erf eri erk ern erp err faa fae faf fai fak fan fap far fea fee fef fei fek fen fep fer ffa ffe fff ffi ffk ffn ffp ffr fia fie fif fii fik fin fip fir fka fkf fki fkk fkp fna fne fnf fni fnk fnn fnp fnr fpa fpe fpi fpk fpn fpp fpr fra fre frf fri frk frn frp frr i-f ia- iaa iae iaf iai ian iap iar ie- iea iee ief iei iek ien iep ier ifa ife iff ifi ifn ifp ifr iia iie iif iii iin iip iir ika ike ikf iki ikk ikr in- ina ine inf ini ink inn inp inr ipa ipe ipf ipi ipn ipp ipr ir- ira ire irf iri irk irn irp irr ka- kaa kae kaf kai kak kan kap kar ke- kea kee kef kei kek ken kep ker kfa kff kfi kia kie kif kii kik kin kip kir kke kki kkk kkn kkp kkr kn- kna kne knf kni knk knn knp knr kpa kpe kpf kpi kpk kpn kpp kpr kra krf kri krk krn krp krr n-i naa nae naf nai nak nan nap nar ne- nea nee nef nei nek nen nep ner nfa nfe nff nfi nfk nfn nfp nfr nia nie nif nii nik nin nip nir nka nke nkf nki nkk nkn nkp nkr nna nne nnf nni nnk nnn nnp npa npe npf npi npn npp npr nra nre nrf nri nrk nrn nrp nrr p-p paa pae paf pai pak pan pap par pea pee pef pei pek pen pep per pfa pfe pff pfi pfk pfn pfp pfr pia pie pif pii pik pin pip pir pka pke pkf pki pkn pkp pkr pn- pna pne pnf pni pnk pnn pnp pnr ppa ppe ppf ppi ppk ppn ppp ppr pra pre prf pri prk prn prp prr ra- raa rae raf rai rak ran rap rar re- rea ree ref rei rek ren rep rer rfa rfe rff rfi rfk rfn rfp rfr ria rie rif rii rik rin rip rir rke rkf rkk rkp rna rni rnn rnp rnr rpa rpe rpf rpi rpk rpn rpp rpr rra rrf rri rrk rrn rrp rrr