ddd ddi ddl dds ddt di- did dii dil dis dit dl- dld dli dll dls dlt dsd dsi dsl dss dst dtd dti dtl dts dtt i-d idd idi idl ids idt iid iii iil iis iit il- ild ili ill ils ilt is- isd isi isl iss ist itd iti itl its itt ldd ldi ldl lds ldt lid lii lil lis lit lld lli lll lls llt lsd lsi lsl lss lst ltd lti ltl lts ltt sdd sdi sdl sds sdt sid sii sil sis sit sld sli sll sls slt ss- ssd ssi ssl sss sst std sti stl sts stt tdd tdi tdl tds tdt tid tii til tis tit tld tli tll tls tlt tsd tsi tsl tss tst ttd tti ttl tts ttt