a-a a-i a-t aaa aai aao aas aat ai- aia aii aio ais ait aoa aoi aoo aos aot as- asa asi aso ass ast at- ata ati ato ats att ia- iaa iai iao ias iat iia iii iio iis iit io- ioa ioi ioo ios iot is- isa isi iso iss ist ita iti ito its itt o-i oaa oai oao oas oat oia oii oio ois oit oo- ooa ooi ooo oos oot os- osa osi oso oss ost ot- ota oti oto ots ott saa sai sao sas sat sia sii sio sis sit soa soi soo sos sot ss- ssa ssi sso sss sst sta sti sto sts stt taa tai tao tas tat tia tii tio tis tit to- toa toi too tos tot tsa tsi tso tss tst tta tti tto tts ttt