ddd ddn ddo dds ddt dnd dnn dno dns dnt dod don doo dos dot dov dsd dsn dso dss dst dsv dtd dtn dto dts dtt dtv dvd dvn dvs dvt ndd ndn ndo nds ndt ndv nnn nno nns nnt nnv no- nod non noo nos not nov nsd nsn nso nss nst nsv ntd ntn nto nts ntt ntv nvd nvn nvt nvv odd odn odo ods odt odv on- ond onn ono ons ont oo- ood oon ooo oos oot oov os- osd osn oso oss ost osv ot- otd otn oto ots ott otv ov- ovd ovo ovs ovv sdd sdn sdo sds sdt sdv snd snn sno sns snt snv sod son soo sos sot sov ss- ssd ssn sso sss sst ssv std stn sto sts stt stv svd svn svo svs svt svv tdd tdn tdo tds tdt tdv tnd tnn tno tns tnt to- tod ton too tos tot tov tsd tsn tso tss tst tsv ttd ttn tto tts ttt ttv tvd tvn tvo tvs tvt vdd vdo vds vdt vdv vn- vnd vno vns vnv vod von voo vos vot vov vsd vsn vso vss vst vsv vto vts vtt vtv vvo vvs vvt vvv