-ol ddd ddl ddo dds ddt dl- dld dll dlo dls dlt dod dol doo dos dot dsd dsl dso dss dst dtd dtl dto dts dtt ldd ldl ldo lds ldt lld lll llo lls llt lod lol loo los lot lsd lsl lso lss lst ltd ltl lto lts ltt odd odl odo ods odt old oll olo ols olt oo- ood ool ooo oos oot os- osd osl oso oss ost ot- otd otl oto ots ott sdd sdl sdo sds sdt sld sll slo sls slt sod sol soo sos sot ss- ssd ssl sso sss sst std stl sto sts stt tdd tdl tdo tds tdt tld tll tlo tls tlt to- tod tol too tos tot tsd tsl tso tss tst ttd ttl tto tts ttt