a-a a-i aaa aaf aai aan aav af- afa aff afi afn afv ai- aia aif aii ain aiv an- ana anf ani ann anv av- ava avf avi avn faa faf fai fan fav ffa fff ffi ffn ffv fia fif fii fin fna fnf fni fnn fnv fva i-f i-v ia- iaa iaf iai ian iav ifa iff ifi ifn iia iif iii iin in- ina inf ini inn inv iva ivf ivi ivv n-i naa naf nai nan nav nfa nff nfi nfn nfv nia nif nii nin niv nna nnf nni nnn nnv nva nvi nvn nvv v-a vaa vai van vav vfa vff vfi vfn vfv vi- via vif vii vin viv vn- vna vnf vni vnv vva vvi vvv