a-a a-i a-t aaa aaf aai aan aao aat af- afa aff afi afn afo aft ai- aia aif aii ain aio ait an- ana anf ani ann ano ant aoa aof aoi aon aoo aot at- ata atf ati atn ato att faa faf fai fan fao fat ffa fff ffi ffn ffo fft fia fif fii fin fit fna fnf fni fnn fnt foa fof foi fon foo fot fta ftf fti ftn fto ftt i-f ia- iaa iaf iai ian iao iat ifa iff ifi ifn ifo ift iia iif iii iin iio iit in- ina inf ini inn ino int io- ioa iof ioi ion ioo iot ita itf iti itn ito itt n-i naa naf nai nan nao nat nfa nff nfi nfn nfo nft nia nif nii nin nio nit nna nnf nni nnn nno nnt no- noa nof noi non noo not nta ntf nti ntn nto ntt o-i oaa oaf oai oan oao oat of- ofa off ofi ofn ofo oft oia oif oii oin oio oit on- ona onf oni onn ono ont oo- ooa oof ooi oon ooo oot ot- ota otf oti otn oto ott taa taf tai tan tao tat tfa tff tfi tfn tfo tft tia tif tii tin tio tit tna tnf tni tnn tno tnt to- toa tof toi ton too tot tta ttf tti ttn tto ttt