-ol -th hhh hhk hhl hho hhs hht hkh hkk hkl hko hks hkt hlh hll hlo hls hlt hoh hok hol hoo hos hot hsh hsk hsl hss hst hth htk htl hto hts htt k-t khh khk kho khs kkh kkk kkl kks kkt kl- klh klo kls klt koh kok kol koo kos kot ksh ksk ksl kso kss kst kth ktk ktl kto kts ktt lhh lhk lho lhs lht lkh lkl lks lkt llk lll llo lls llt loh lok lol loo los lot lsh lsk lsl lso lss lst lth ltk ltl lto lts ltt ohh ohl oho ohs oht okk okl oko oks olk oll olo ols olt oo- ooh ook ool ooo oos oot os- osh osk osl oso oss ost ot- oth otk otl oto ots ott sh- shh shk shl sho shs sht sk- skh skk skl sko sks skt slh slk sll slo sls slt soh sok sol soo sos sot ss- ssh ssk ssl sso sss sst sth stk stl sto sts stt th- thh thk thl tho ths tht tkk tkl tko tks tkt tlh tlk tll tlo tls tlt to- toh tok tol too tos tot tsh tsk tsl tso tss tst tth ttk ttl tto tts ttt