-th hhh hhl hhm hhs hht hlh hll hlm hls hlt hmh hml hmm hms hmt hsh hsl hsm hss hst hth htl htm hts htt lhh lhs lht lll llm lls llt lmh lml lmm lms lmt lsh lsl lsm lss lst lth ltl ltm lts ltt mhh mhl mhm mhs mht mlh mll mlm mls mlt mmh mml mmm mms mmt msh msl msm mss mst mth mtl mtm mts mtt sh- shh shl shm shs sht slh sll slm sls slt smh sml smm sms smt ss- ssh ssl ssm sss sst sth stl stm sts stt th- thh thl thm ths tht tlh tll tlm tls tlt tmh tml tmm tms tmt tsh tsl tsm tss tst tth ttl ttm tts ttt