ddd ddg ddo dds ddt dgd dgg dgs dgt dod dog doo dos dot dsd dsg dso dss dst dtd dtg dto dts dtt g-d gdd gdo gds gdt ggd ggg ggo ggs ggt god gog goo gos got gsd gsg gso gss gst gtd gtg gto gts gtt odd odg odo ods odt ogd ogg ogo ogs ogt oo- ood oog ooo oos oot os- osd osg oso oss ost ot- otd otg oto ots ott sdd sdg sdo sds sdt sgd sgg sgo sgs sgt sod sog soo sos sot ss- ssd ssg sso sss sst std stg sto sts stt tdd tdg tdo tds tdt tgg tgo tgs tgt to- tod tog too tos tot tsd tsg tso tss tst ttd ttg tto tts ttt