ddd ddi ddk ddo dds ddt ddy di- did dii dik dio dis dit diy dki dkk dko dks dkt dod doi dok doo dos dot doy dsd dsi dsk dso dss dst dsy dtd dti dtk dto dts dtt dty dy- dyd dyk dyo dys dyy i-d idd idi idk ido ids idt idy iid iii iio iis iit iki ikk iko iks ikt io- iod ioi ioo ios iot is- isd isi isk iso iss ist isy itd iti itk ito its itt ity iyo iys iyt iyy k-t kdk kdo kds kdt kdy kid kii kik kio kis kit kki kkk kks kkt kky kod koi kok koo kos kot koy ksd ksi ksk kso kss kst ktk kto kts ktt kyd kyo kys kyt o-i odd odi odo ods odt oid oii oik oio ois oit okd oki okk oko oks oo- ood ooi ook ooo oos oot os- osd osi osk oso oss ost ot- otd oti otk oto ots ott oyd oyi oyo oys sdd sdi sdk sdo sds sdt sdy sid sii sik sio sis sit sk- skd ski skk sko sks skt sky sod soi sok soo sos sot soy ss- ssd ssi ssk sso sss sst std sti stk sto sts stt sty sy- syd syi syk sys syt tdd tdi tdk tdo tds tdt tdy tid tii tik tio tis tit tiy tkk tko tks tkt tky to- tod toi tok too tos tot toy tsd tsi tsk tso tss tst tsy ttd tti ttk tto tts ttt tty tyd tyo tys tyt ydo yds ydt ydy yid yii yio yis yit yki ykk yod yoi yok yoo yos yot yoy ysi ysk yso yss yst ysy ytd ytk yto yts ytt yys yyt yyy