-er -ic a-a a-c a-i aaa aac aae aai aan aao aap aar ac- aca acc ace aci acn aco acp acr aea aec aee aei aen aeo aep aer ai- aia aic aie aii ain aio aip air an- ana anc ane ani ann ano anp anr aoa aoc aoe aoi aon aoo aop aor ap- apa apc ape api apn apo app apr ar- ara arc are ari arn aro arp arr c-- caa cac cae cai can cao cap car cca ccc cce cci ccn cco ccp ccr ce- cea cec cee cei cen ceo cep cer ci- cia cic cie cii cin cio cip cir cn- cna cnc cne cni cnn cno cnp cnr co- coa coc coe coi con coo cop cor cpa cpc cpe cpi cpn cpo cpp cpr cra crc cre cri crn cro crp crr eaa eac eae eai ean eao eap ear ec- eca ecc ece eci ecn eco ecr eea eec eee een eeo eep eer eia eic eie eii ein eio eip eir en- ena enc ene eni enn eno enp enr eo- eoa eoc eoe eoi eon eoo eop eor ep- epa epc epe epi epn epo epp epr era erc ere eri ern ero erp err ia- iaa iac iae iai ian iao iap iar ica icc ice ici icn ico icp icr ie- iea iec iee iei ien iep ier iia iic iie iii iin iio iip iir in- ina inc ine ini inn ino inp inr io- ioa ioc ioe ioi ion ioo iop ior ipa ipc ipe ipi ipn ipo ipp ipr ir- ira irc ire iri irn iro irp irr n-i naa nac nae nai nan nao nap nar nca ncc nce nci ncn nco ncp ncr ne- nea nec nee nei nen neo nep ner nia nic nie nii nin nio nip nir nna nnc nne nni nnn nno nnp no- noa noc noe noi non noo nop nor npa npc npe npi npn npo npp npr nra nrc nre nri nrn nro nrp nrr o-i oaa oac oae oai oan oao oap oar oc- oca occ oci ocn oco ocp ocr oea oec oee oei oen oeo oep oer oia oic oie oii oin oio oip oir on- ona onc one oni onn ono onp onr oo- ooa ooc ooi oon ooo oop oor op- opa opc ope opi opn opo opp opr or- ora orc ore ori orn oro orp orr p-p paa pac pae pai pan pao pap par pca pcc pce pci pcn pco pcp pcr pea pec pee pei pen peo pep per pia pic pie pii pin pio pip pir pn- pna pnc pne pni pnn pno pnp pnr poa poc poe poi pon poo pop por ppa ppc ppe ppi ppn ppo ppp ppr pra prc pre pri prn pro prp prr ra- raa rac rae rai ran rao rap rar rca rcc rce rci rcn rco rcp rcr re- rea rec ree rei ren reo rep rer ria ric rie rii rin rio rip rir rna rnc rni rnn rno rnp rnr roa roc roe roi ron roo rop ror rpa rpc rpe rpi rpn rpo rpp rpr rra rrc rri rrn rrp rrr