a-a a-i a-t aaa aaf aai aan aao aas aat af- afa aff afi afn afo afs aft ai- aia aif aii ain aio ais ait an- ana anf ani ann ano ans ant aoa aof aoi aon aoo aos aot as- asa asf asi asn aso ass ast at- ata atf ati atn ato ats att faa faf fai fan fao fas fat ffa fff ffi ffn ffo ffs fft fia fif fii fin fis fit fna fnf fni fnn fns fnt foa fof foi fon foo fos fot fsa fsf fsi fsn fso fss fst fta ftf fti ftn fto fts ftt i-f ia- iaa iaf iai ian iao ias iat ifa iff ifi ifn ifo ifs ift iia iif iii iin iio iis iit in- ina inf ini inn ino ins int io- ioa iof ioi ion ioo ios iot is- isa isf isi isn iso iss ist ita itf iti itn ito its itt n-i naa naf nai nan nao nas nat nfa nff nfi nfn nfo nfs nft nia nif nii nin nio nis nit nna nnf nni nnn nno nns nnt no- noa nof noi non noo nos not nsa nsf nsi nsn nso nss nst nta ntf nti ntn nto nts ntt o-i oaa oaf oai oan oao oas oat of- ofa off ofi ofn ofo ofs oft oia oif oii oin oio ois oit on- ona onf oni onn ono ons ont oo- ooa oof ooi oon ooo oos oot os- osa osf osi osn oso oss ost ot- ota otf oti otn oto ots ott saa saf sai san sao sas sat sfa sff sfi sfn sfo sfs sft sia sif sii sin sio sis sit sna snf sni snn sno sns snt soa sof soi son soo sos sot ss- ssa ssf ssi ssn sso sss sst sta stf sti stn sto sts stt taa taf tai tan tao tas tat tfa tff tfi tfn tfo tfs tft tia tif tii tin tio tis tit tna tnf tni tnn tno tns tnt to- toa tof toi ton too tos tot tsa tsf tsi tsn tso tss tst tta ttf tti ttn tto tts ttt