-er -ic a-a a-c a-i aaa aac aae aaf aai aan aao aap aar ac- aca acc ace acf aci acn aco acp acr aea aec aee aef aei aen aeo aep aer af- afa afc afe aff afi afn afo afp afr ai- aia aic aie aif aii ain aio aip air an- ana anc ane anf ani ann ano anp anr aoa aoc aoe aof aoi aon aoo aop aor ap- apa apc ape apf api apn apo app apr ar- ara arc are arf ari arn aro arp arr c-- caa cac cae caf cai can cao cap car cca ccc cce ccf cci ccn cco ccp ccr ce- cea cec cee cef cei cen ceo cep cer cfa cfc cfe cff cfi cfn cfo cfp cfr ci- cia cic cie cif cii cin cio cip cir cn- cna cnc cne cnf cni cnn cno cnp cnr co- coa coc coe cof coi con coo cop cor cpa cpc cpe cpf cpi cpn cpo cpp cpr cra crc cre crf cri crn cro crp crr eaa eac eae eaf eai ean eao eap ear ec- eca ecc ece ecf eci ecn eco ecr eea eec eee eef een eeo eep eer ef- efa efc efe eff efi efo efp efr eia eic eie eif eii ein eio eip eir en- ena enc ene enf eni enn eno enp enr eo- eoa eoc eoe eof eoi eon eoo eop eor ep- epa epc epe epf epi epn epo epp epr era erc ere erf eri ern ero erp err faa fac fae faf fai fan fao fap far fca fcc fce fcf fci fcn fco fcp fcr fea fec fee fef fei fen feo fep fer ffa ffc ffe fff ffi ffn ffo ffp ffr fia fic fie fif fii fin fip fir fna fnc fne fnf fni fnn fnp fnr foa foc foe fof foi fon foo fop for fpa fpc fpe fpi fpn fpo fpp fpr fra frc fre frf fri frn fro frp frr i-f ia- iaa iac iae iaf iai ian iao iap iar ica icc ice icf ici icn ico icp icr ie- iea iec iee ief iei ien iep ier ifa ifc ife iff ifi ifn ifo ifp ifr iia iic iie iif iii iin iio iip iir in- ina inc ine inf ini inn ino inp inr io- ioa ioc ioe iof ioi ion ioo iop ior ipa ipc ipe ipf ipi ipn ipo ipp ipr ir- ira irc ire irf iri irn iro irp irr n-i naa nac nae naf nai nan nao nap nar nca ncc nce ncf nci ncn nco ncp ncr ne- nea nec nee nef nei nen neo nep ner nfa nfc nfe nff nfi nfn nfo nfp nfr nia nic nie nif nii nin nio nip nir nna nnc nne nnf nni nnn nno nnp no- noa noc noe nof noi non noo nop nor npa npc npe npf npi npn npo npp npr nra nrc nre nrf nri nrn nro nrp nrr o-i oaa oac oae oaf oai oan oao oap oar oc- oca occ ocf oci ocn oco ocp ocr oea oec oee oef oei oen oeo oep oer of- ofa ofc ofe off ofi ofn ofo ofp ofr oia oic oie oif oii oin oio oip oir on- ona onc one onf oni onn ono onp onr oo- ooa ooc oof ooi oon ooo oop oor op- opa opc ope opf opi opn opo opp opr or- ora orc ore orf ori orn oro orp orr p-p paa pac pae paf pai pan pao pap par pca pcc pce pcf pci pcn pco pcp pcr pea pec pee pef pei pen peo pep per pfa pfc pfe pff pfi pfn pfo pfp pfr pia pic pie pif pii pin pio pip pir pn- pna pnc pne pnf pni pnn pno pnp pnr poa poc poe pof poi pon poo pop por ppa ppc ppe ppf ppi ppn ppo ppp ppr pra prc pre prf pri prn pro prp prr ra- raa rac rae raf rai ran rao rap rar rca rcc rce rcf rci rcn rco rcp rcr re- rea rec ree ref rei ren reo rep rer rfa rfc rfe rff rfi rfn rfo rfp rfr ria ric rie rif rii rin rio rip rir rna rnc rni rnn rno rnp rnr roa roc roe rof roi ron roo rop ror rpa rpc rpe rpf rpi rpn rpo rpp rpr rra rrc rrf rri rrn rrp rrr