a-a a-i aaa aaf aai aam aao af- afa aff afi afm afo ai- aia aif aii aim aio ama amf ami amm amo aoa aof aoi aom aoo faa faf fai fam fao ffa fff ffi ffm ffo fia fif fii fim fma fmf fmi fmm fmo foa fof foi fom foo i-f ia- iaa iaf iai iam iao ifa iff ifi ifm ifo iia iif iii iim iio im- ima imf imi imm imo io- ioa iof ioi iom ioo m-f m-o maa maf mai mam mao mfa mff mfi mfm mfo mi- mia mif mii mim mio mma mmf mmi mmm mmo moa mof moi mom moo o-i oaa oaf oai oam oao of- ofa off ofi ofm ofo oia oif oii oim oio om- oma omf omi omm omo oo- ooa oof ooi oom ooo