-up ddd ddi ddo ddp ddr dds ddt ddu di- did dii dio dip dir dis dit diu dod doi doo dop dor dos dot dou dpd dpi dpo dpp dpr dps dpt dpu drd dri dro drp drr drs drt dru dsd dsi dso dsp dsr dss dst dsu dtd dti dto dtp dtr dts dtt dtu dud dui duo dup dur dus dut i-d idd idi ido idp idr ids idt idu iid iii iio iip iir iis iit iiu io- iod ioi ioo iop ior ios iot iou ipd ipi ipo ipp ipr ips ipt ipu ir- ird iri iro irp irr irs irt iru is- isd isi iso isp isr iss ist isu itd iti ito itp its itt itu iu- iud iui iup iur ius iut o-i odd odi odo odp odr ods odt odu oid oii oio oip oir ois oit oiu oo- ood ooi ooo oop oor oos oot op- opd opi opo opp opr ops opt or- ord ori oro orp orr ors ort oru os- osd osi oso osp osr oss ost osu ot- otd oti oto otp otr ots ott otu ou- oud oui ouo oup our ous out p-p pdd pdi pdo pdp pdr pds pdt pdu pid pii pio pip pir pis pit piu pod poi poo pop por pos pot pou ppd ppi ppo ppp ppr pps ppt ppu prd pri pro prp prr prs prt pru ps- psd psi pso psp psr pss pst psu pt- ptd pti pto ptp ptr pts ptt ptu pud pui pup pur pus put puu rdd rdi rdo rdp rdr rds rdt rdu rid rii rio rip rir ris rit rod roi roo rop ror ros rot rou rpd rpi rpo rpp rpr rps rpt rpu rrd rri rrp rrr rrs rrt rru rsd rsi rso rsp rsr rss rst rsu rtd rti rto rtp rtr rts rtt rtu rud rui ruo rup rur rus rut ruu sdd sdi sdo sdp sdr sds sdt sdu sid sii sio sip sir sis sit siu sod soi soo sop sor sos sot sou spd spi spo spp spr sps spt spu sr- srd sri sro srp srr srs srt ss- ssd ssi sso ssp ssr sss sst ssu std sti sto stp str sts stt stu sud sui suo sup sur sus sut suu tdd tdi tdo tdp tdr tds tdt tdu tid tii tio tip tir tis tit tiu to- tod toi too top tor tos tot tou tpd tpi tpo tpp tpr tps tpt tpu trd tri tro trp trr trs trt tru tsd tsi tso tsp tsr tss tst tsu ttd tti tto ttp ttr tts ttt ttu tud tui tuo tup tur tus tut tuu udd udi udo udp udr uds udt udu uid uii uio uip uir uis uit uiu uod uoo uop uor uos uot up- upd upi upo upp upr ups upt upu ur- urd uri uro urp urr urs urt uru usd usi uso usp usr uss ust usu utd uti uto utp utr uts utt utu uur uus uut uuu