-up ddd ddm ddo ddp dds ddt ddu dmd dmm dmo dmp dms dmt dmu dod dom doo dop dos dot dou dpd dpm dpo dpp dps dpt dpu dsd dsm dso dsp dss dst dsu dtd dtm dto dtp dts dtt dtu dud dum duo dup dus dut m-o mdd mdm mdo mdp mds mdt mdu mmd mmm mmo mmp mms mmt mmu mod mom moo mop mos mot mou mpd mpm mpo mpp mps mpt mpu msd msm mso msp mss mst msu mtd mtm mto mtp mts mtt mtu mud mum mup mus mut muu odd odm odo odp ods odt odu om- omd omm omo omp oms omt omu oo- ood oom ooo oop oos oot op- opd opm opo opp ops opt os- osd osm oso osp oss ost osu ot- otd otm oto otp ots ott otu ou- oud oum ouo oup ous out p-p pdd pdm pdo pdp pds pdt pdu pmd pmm pmo pmp pms pmt pmu pod pom poo pop pos pot pou ppd ppm ppo ppp pps ppt ppu ps- psd psm pso psp pss pst psu pt- ptd ptm pto ptp pts ptt ptu pud pum pup pus put puu sdd sdm sdo sdp sds sdt sdu smd smm smo smp sms smt smu sod som soo sop sos sot sou spd spm spo spp sps spt spu ss- ssd ssm sso ssp sss sst ssu std stm sto stp sts stt stu sud sum suo sup sus sut suu tdd tdm tdo tdp tds tdt tdu tmd tmm tmo tmp tms tmt tmu to- tod tom too top tos tot tou tpd tpm tpo tpp tps tpt tpu tsd tsm tso tsp tss tst tsu ttd ttm tto ttp tts ttt ttu tud tum tuo tup tus tut tuu udd udm udo udp uds udt udu um- umd umm umo ump ums umt umu uod uom uoo uop uos uot up- upd upm upo upp ups upt upu usd usm uso usp uss ust usu utd utm uto utp uts utt utu uum uus uut uuu