-ic a-a a-c a-i aaa aac aai aan aao aap ac- aca acc aci acn aco acp ai- aia aic aii ain aio aip an- ana anc ani ann ano anp aoa aoc aoi aon aoo aop ap- apa apc api apn apo app c-- caa cac cai can cao cap cca ccc cci ccn cco ccp ci- cia cic cii cin cio cip cn- cna cnc cni cnn cno cnp co- coa coc coi con coo cop cpa cpc cpi cpn cpo cpp ia- iaa iac iai ian iao iap ica icc ici icn ico icp iia iic iii iin iio iip in- ina inc ini inn ino inp io- ioa ioc ioi ion ioo iop ipa ipc ipi ipn ipo ipp n-i naa nac nai nan nao nap nca ncc nci ncn nco ncp nia nic nii nin nio nip nna nnc nni nnn nno nnp no- noa noc noi non noo nop npa npc npi npn npo npp o-i oaa oac oai oan oao oap oc- oca occ oci ocn oco ocp oia oic oii oin oio oip on- ona onc oni onn ono onp oo- ooa ooc ooi oon ooo oop op- opa opc opi opn opo opp p-p paa pac pai pan pao pap pca pcc pci pcn pco pcp pia pic pii pin pio pip pn- pna pnc pni pnn pno pnp poa poc poi pon poo pop ppa ppc ppi ppn ppo ppp