a-a aaa aaf aag aan aao aau af- afa aff afg afn afo afu ag- aga agf agg agn ago agu an- ana anf ang ann ano anu aoa aof aog aon aoo aou au- aua auf aug aun auo faa faf fag fan fao fau ffa fff ffg ffn ffo ffu fga fgf fgg fgn fna fnf fng fnn fnu foa fof fog fon foo fou fua fuf fug fun fuo fuu gaa gaf gag gan gao gau gfa gff gfo gga ggg ggn ggo ggu gna gnf gnn gno gnu goa gof gog gon goo gou gu- gua guf gug gun guo guu naa naf nag nan nao nau nfa nff nfn nfo nfu nga ngf ngg ngn ngo ngu nna nnf nng nnn nno nnu no- noa nof nog non noo nou nua nug nun nuo nuu oaa oaf oag oan oao oau of- ofa off ofg ofn ofo ofu oga ogf ogg ogn ogo on- ona onf ong onn ono onu oo- ooa oof oog oon ooo ou- oua ouf oun ouo ua- uaa uaf uag uan uao uau ufa uff ufg ufn ufo ufu uga ugf ugg ugn ugo ugu un- una unf ung unn uno unu uoa uog uon uoo uua uug uun uuu