ddd ddl ddn dds ddt dl- dld dll dls dlt dnd dnl dnn dns dnt dsd dsl dsn dss dst dtd dtl dtn dts dtt ldd ldl ldn lds ldt lld lll lln lls llt lnd lnl lnn lns lnt lsd lsl lsn lss lst ltd ltl lts ltt ndd ndl ndn nds ndt nld nll nln nls nlt nnl nnn nns nnt nsd nsl nsn nss nst ntd ntn nts ntt sdd sdl sdn sds sdt sld sll sln sls slt snd snl snn sns snt ss- ssd ssl ssn sss sst std stl stn sts stt tdd tdl tdn tds tdt tld tll tln tls tlt tnd tnl tnn tns tnt tsd tsl tsn tss tst ttd ttl ttn tts ttt