ddd ddi ddo ddr dds ddz di- did dii dio dir dis diz dod doi doo dor dos doz drd dri dro drr drs drz dsd dsi dso dsr dss dsz dzd dzi dzo dzr dzs i-d idd idi ido idr ids iid iii iio iir iis io- iod ioi ioo ior ios ir- ird iri iro irr irs is- isd isi iso isr iss izi izo izz o-i odd odi odo odr ods oid oii oio oir ois oiz oo- ood ooi ooo oor oos or- ord ori oro orr ors orz os- osd osi oso osr oss ozo ozs ozz rdd rdi rdo rdr rds rid rii rio rir ris riz rod roi roo ror ros roz rrd rri rrr rrs rsd rsi rso rsr rss rzo sdd sdi sdo sdr sds sdz sid sii sio sir sis sod soi soo sor sos soz sr- srd sri sro srr srs ss- ssd ssi sso ssr sss ssz szd szi szr zds zid zio zir zis ziz zo- zod zoi zoo zor zos zro zrs zsi zsz zzr zzs zzz