-ol -th ddd ddh ddl ddo ddt dh- dhd dhh dhl dho dht dl- dld dlh dll dlo dlt dod doh dol doo dot dtd dth dtl dto dtt hdd hdh hdl hdo hdt hhd hhh hhl hho hht hld hlh hll hlo hlt hod hoh hol hoo hot htd hth htl hto htt ldd ldh ldl ldo ldt lhd lhh lho lht lld lll llo llt lod loh lol loo lot ltd lth ltl lto ltt odd odh odl odo odt ohd ohh ohl oho oht old oll olo olt oo- ood ooh ool ooo oot ot- otd oth otl oto ott tdd tdh tdl tdo tdt th- thd thh thl tho tht tld tlh tll tlo tlt to- tod toh tol too tot ttd tth ttl tto ttt