-up mmm mmp mms mmt mmu mpm mpp mps mpt mpu msm msp mss mst msu mtm mtp mts mtt mtu mum mup mus mut muu p-p pmm pmp pms pmt pmu ppm ppp pps ppt ppu ps- psm psp pss pst psu pt- ptm ptp pts ptt ptu pum pup pus put puu smm smp sms smt smu spm spp sps spt spu ss- ssm ssp sss sst ssu stm stp sts stt stu sum sup sus sut suu tmm tmp tms tmt tmu tpm tpp tps tpt tpu tsm tsp tss tst tsu ttm ttp tts ttt ttu tum tup tus tut tuu um- umm ump ums umt umu up- upm upp ups upt upu usm usp uss ust usu utm utp uts utt utu uum uus uut uuu