ddd ddi ddm ddo dds ddt di- did dii dim dio dis dit dmd dmi dmm dmo dms dmt dod doi dom doo dos dot dsd dsi dsm dso dss dst dtd dti dtm dto dts dtt i-d idd idi idm ido ids idt iid iii iim iio iis iit im- imd imi imm imo ims imt io- iod ioi iom ioo ios iot is- isd isi ism iso iss ist itd iti itm ito its itt m-o mdd mdi mdm mdo mds mdt mi- mid mii mim mio mis mit mmd mmi mmm mmo mms mmt mod moi mom moo mos mot msd msi msm mso mss mst mtd mti mtm mto mts mtt o-i odd odi odm odo ods odt oid oii oim oio ois oit om- omd omi omm omo oms omt oo- ood ooi oom ooo oos oot os- osd osi osm oso oss ost ot- otd oti otm oto ots ott sdd sdi sdm sdo sds sdt sid sii sim sio sis sit smd smi smm smo sms smt sod soi som soo sos sot ss- ssd ssi ssm sso sss sst std sti stm sto sts stt tdd tdi tdm tdo tds tdt tid tii tim tio tis tit tmd tmi tmm tmo tms tmt to- tod toi tom too tos tot tsd tsi tsm tso tss tst ttd tti ttm tto tts ttt