iii iio iis iit iiu io- ioi ioo ios iot iou is- isi iso iss ist isu isy iti ito its itt itu ity iu- iui ius iut iyo iys iyt iyy o-i oii oio ois oit oiu oo- ooi ooo oos oot os- osi oso oss ost osu ot- oti oto ots ott otu ou- oui ouo ous out oyi oyo oys sii sio sis sit siu soi soo sos sot sou soy ss- ssi sso sss sst ssu sti sto sts stt stu sty sui suo sus sut suu suy sy- syi sys syt syu tii tio tis tit tiu tiy to- toi too tos tot tou toy tsi tso tss tst tsu tsy tti tto tts ttt ttu tty tui tuo tus tut tuu tuy tyo tys tyt uii uio uis uit uiu uoo uos uot usi uso uss ust usu uti uto uts utt utu uty uus uut uuu uyi uyo uys uyu yii yio yis yit yoi yoo yos yot you yoy ysi yso yss yst ysu ysy yto yts ytt ytu yui yuo yus yut yuu yuy yys yyt yyu yyy