ddd ddi ddm ddo ddp dds ddt di- did dii dim dio dip dis dit dmd dmi dmm dmo dmp dms dmt dod doi dom doo dop dos dot dpd dpi dpm dpo dpp dps dpt dsd dsi dsm dso dsp dss dst dtd dti dtm dto dtp dts dtt i-d idd idi idm ido idp ids idt iid iii iim iio iip iis iit im- imd imi imm imo imp ims imt io- iod ioi iom ioo iop ios iot ipd ipi ipm ipo ipp ips ipt is- isd isi ism iso isp iss ist itd iti itm ito itp its itt m-o mdd mdi mdm mdo mdp mds mdt mi- mid mii mim mio mip mis mit mmd mmi mmm mmo mmp mms mmt mod moi mom moo mop mos mot mpd mpi mpm mpo mpp mps mpt msd msi msm mso msp mss mst mtd mti mtm mto mtp mts mtt o-i odd odi odm odo odp ods odt oid oii oim oio oip ois oit om- omd omi omm omo omp oms omt oo- ood ooi oom ooo oop oos oot op- opd opi opm opo opp ops opt os- osd osi osm oso osp oss ost ot- otd oti otm oto otp ots ott p-p pdd pdi pdm pdo pdp pds pdt pid pii pim pio pip pis pit pmd pmi pmm pmo pmp pms pmt pod poi pom poo pop pos pot ppd ppi ppm ppo ppp pps ppt ps- psd psi psm pso psp pss pst pt- ptd pti ptm pto ptp pts ptt sdd sdi sdm sdo sdp sds sdt sid sii sim sio sip sis sit smd smi smm smo smp sms smt sod soi som soo sop sos sot spd spi spm spo spp sps spt ss- ssd ssi ssm sso ssp sss sst std sti stm sto stp sts stt tdd tdi tdm tdo tdp tds tdt tid tii tim tio tip tis tit tmd tmi tmm tmo tmp tms tmt to- tod toi tom too top tos tot tpd tpi tpm tpo tpp tps tpt tsd tsi tsm tso tsp tss tst ttd tti ttm tto ttp tts ttt