-er -ic a-a a-c a-i aaa aac aae aai aak aan aao aar ac- aca acc ace aci ack acn aco acr aea aec aee aei aek aen aeo aer ai- aia aic aie aii aik ain aio air aka akc ake aki akk akn ako akr an- ana anc ane ani ank ann ano anr aoa aoc aoe aoi aok aon aoo aor ar- ara arc are ari ark arn aro arr c-- caa cac cae cai cak can cao car cca ccc cce cci cck ccn cco ccr ce- cea cec cee cei cek cen ceo cer ci- cia cic cie cii cik cin cio cir cka ckc cki cko cn- cna cnc cne cni cnn cno cnr co- coa coc coe coi cok con coo cor cra crc cre cri crk crn cro crr eaa eac eae eai eak ean eao ear ec- eca ecc ece eci eck ecn eco ecr eea eec eee eek een eeo eer eia eic eie eii eik ein eio eir eka ekc eke eki eko ekr en- ena enc ene eni enk enn eno enr eo- eoa eoc eoe eoi eok eon eoo eor era erc ere eri erk ern ero err ia- iaa iac iae iai ian iao iar ica icc ice ici ick icn ico icr ie- iea iec iee iei iek ien ier iia iic iie iii iin iio iir ika ikc ike iki ikk iko ikr in- ina inc ine ini ink inn ino inr io- ioa ioc ioe ioi ion ioo ior ir- ira irc ire iri irk irn iro irr ka- kaa kac kae kai kak kan kao kar kca kcc kce kci kck kcn kcr ke- kea kec kee kei kek ken keo ker kia kic kie kii kik kin kio kir kkc kke kki kkk kkn kkr kn- kna knc kne kni knk knn kno knr koa koc koe koi kok kon koo kor kra krc kri krk krn kro krr n-i naa nac nae nai nak nan nao nar nca ncc nce nci nck ncn nco ncr ne- nea nec nee nei nek nen neo ner nia nic nie nii nik nin nio nir nka nkc nke nki nkk nkn nko nkr nna nnc nne nni nnk nnn nno no- noa noc noe noi nok non noo nor nra nrc nre nri nrk nrn nro nrr o-i oaa oac oae oai oak oan oao oar oc- oca occ oci ock ocn oco ocr oea oec oee oei oen oeo oer oia oic oie oii oik oin oio oir oka okc oke oki okk oko okr on- ona onc one oni onk onn ono onr oo- ooa ooc ooi ook oon ooo oor or- ora orc ore ori ork orn oro orr ra- raa rac rae rai rak ran rao rar rca rcc rce rci rcn rco rcr re- rea rec ree rei rek ren reo rer ria ric rie rii rik rin rio rir rkc rke rkk rko rna rnc rni rnn rno rnr roa roc roe roi rok ron roo ror rra rrc rri rrk rrn rrr