-up ddd ddi ddo ddp ddq ddr dds ddu di- did dii dio dip diq dir dis diu dod doi doo dop doq dor dos dou dpd dpi dpo dpp dpr dps dpu dqs drd dri dro drp drq drr drs dru dsd dsi dso dsp dsq dsr dss dsu dud dui duo dup dur dus i-d idd idi ido idp idq idr ids idu iid iii iio iip iir iis iiu io- iod ioi ioo iop ior ios iou ipd ipi ipo ipp ipr ips ipu iqd iqs iqu ir- ird iri iro irp irq irr irs iru is- isd isi iso isp isq isr iss isu iu- iud iui iup iur ius o-i odd odi odo odp odr ods odu oid oii oio oip oir ois oiu oo- ood ooi ooo oop oor oos op- opd opi opo opp opq opr ops oqo or- ord ori oro orp orr ors oru os- osd osi oso osp osq osr oss osu ou- oud oui ouo oup our ous p-p pdd pdi pdo pdp pdq pdr pds pdu pid pii pio pip piq pir pis piu pod poi poo pop por pos pou ppd ppi ppo ppp ppq ppr pps ppu pqi pqq pqr pqs prd pri pro prp prq prr prs pru ps- psd psi pso psp psr pss psu pud pui pup pur pus puu qdr qds qid qio qip qir qis qiu qoi qoo qop qor qos qpp qpr qps qqq qqu qri qrp qrs qru qsd qsi qso qsp qsr qu- qud qui quo qur qus rdd rdi rdo rdp rdr rds rdu rid rii rio rip riq rir ris rod roi roo rop ror ros rou rpd rpi rpo rpp rpr rps rpu rqs rrd rri rrp rrq rrr rrs rru rsd rsi rso rsp rsq rsr rss rsu rud rui ruo rup rur rus ruu sdd sdi sdo sdp sdq sdr sds sdu sid sii sio sip siq sir sis siu sod soi soo sop soq sor sos sou spd spi spo spp spq spr sps spu sqd sqi sqq sqr sqs sr- srd sri sro srp srq srr srs ss- ssd ssi sso ssp ssq ssr sss ssu sud sui suo sup suq sur sus suu udd udi udo udp udr uds udu uid uii uio uip uiq uir uis uiu uod uoo uop uor uos up- upd upi upo upp upr ups upu ur- urd uri uro urp urr urs uru usd usi uso usp usr uss usu uur uus uuu