-up ddd ddm ddp ddr dds ddu dmd dmm dmp dmr dms dmu dpd dpm dpp dpr dps dpu drd drm drp drr drs dru dsd dsm dsp dsr dss dsu dud dum dup dur dus m-r mdd mdm mdp mdr mds mdu mmd mmm mmp mmr mms mmu mpd mpm mpp mpr mps mpu mrd mrm mrp mrr mrs mru msd msm msp msr mss msu mud mum mup mur mus muu p-p pdd pdm pdp pdr pds pdu pmd pmm pmp pmr pms pmu ppd ppm ppp ppr pps ppu prd prm prp prr prs pru ps- psd psm psp psr pss psu pud pum pup pur pus puu rdd rdm rdp rdr rds rdu rmd rmm rmp rmr rms rpd rpm rpp rpr rps rpu rrd rrm rrp rrr rrs rru rsd rsm rsp rsr rss rsu rud rum rup rur rus ruu sdd sdm sdp sdr sds sdu smd smm smp smr sms smu spd spm spp spr sps spu sr- srd srm srp srr srs ss- ssd ssm ssp ssr sss ssu sud sum sup sur sus suu udd udm udp udr uds udu um- umd umm ump umr ums umu up- upd upm upp upr ups upu ur- urd urm urp urr urs uru usd usm usp usr uss usu uum uur uus uuu