ddd ddi ddo ddr dds ddt ddz di- did dii dio dir dis dit diz dod doi doo dor dos dot doz drd dri dro drr drs drt drz dsd dsi dso dsr dss dst dsz dtd dti dto dtr dts dtt dtz dzd dzi dzo dzr dzs i-d idd idi ido idr ids idt iid iii iio iir iis iit io- iod ioi ioo ior ios iot ir- ird iri iro irr irs irt is- isd isi iso isr iss ist itd iti ito its itt itz izi izo izz o-i odd odi odo odr ods odt oid oii oio oir ois oit oiz oo- ood ooi ooo oor oos oot or- ord ori oro orr ors ort orz os- osd osi oso osr oss ost ot- otd oti oto otr ots ott otz ozo ozs ozt ozz rdd rdi rdo rdr rds rdt rid rii rio rir ris rit riz rod roi roo ror ros rot roz rrd rri rrr rrs rrt rsd rsi rso rsr rss rst rtd rti rto rtr rts rtt rtz rzo sdd sdi sdo sdr sds sdt sdz sid sii sio sir sis sit sod soi soo sor sos sot soz sr- srd sri sro srr srs srt ss- ssd ssi sso ssr sss sst ssz std sti sto str sts stt stz szd szi szr tdd tdi tdo tdr tds tdt tid tii tio tir tis tit tiz to- tod toi too tor tos tot toz trd tri tro trr trs trt trz tsd tsi tso tsr tss tst ttd tti tto ttr tts ttt tzd tzs zds zdt zid zio zir zis zit ziz zo- zod zoi zoo zor zos zot zro zrs zsi zst zsz ztr zzr zzs zzt zzz