-ol ddd ddl ddo ddr dds ddt dl- dld dll dlo dlr dls dlt dod dol doo dor dos dot drd drl dro drr drs drt dsd dsl dso dsr dss dst dtd dtl dto dtr dts dtt ldd ldl ldo ldr lds ldt lld lll llo llr lls llt lod lol loo lor los lot lrd lro lrr lrs lrt lsd lsl lso lsr lss lst ltd ltl lto ltr lts ltt odd odl odo odr ods odt old oll olo ols olt oo- ood ool ooo oor oos oot or- ord orl oro orr ors ort os- osd osl oso osr oss ost ot- otd otl oto otr ots ott rdd rdl rdo rdr rds rdt rld rll rlo rlr rls rlt rod rol roo ror ros rot rrd rrl rrr rrs rrt rsd rsl rso rsr rss rst rtd rtl rto rtr rts rtt sdd sdl sdo sdr sds sdt sld sll slo slr sls slt sod sol soo sor sos sot sr- srd srl sro srr srs srt ss- ssd ssl sso ssr sss sst std stl sto str sts stt tdd tdl tdo tdr tds tdt tld tll tlo tlr tls tlt to- tod tol too tor tos tot trd trl tro trr trs trt tsd tsl tso tsr tss tst ttd ttl tto ttr tts ttt