-up ddd ddi ddo ddp dds ddu di- did dii dio dip dis diu dod doi doo dop dos dou dpd dpi dpo dpp dps dpu dsd dsi dso dsp dss dsu dud dui duo dup dus i-d idd idi ido idp ids idu iid iii iio iip iis iiu io- iod ioi ioo iop ios iou ipd ipi ipo ipp ips ipu is- isd isi iso isp iss isu iu- iud iui iup ius o-i odd odi odo odp ods odu oid oii oio oip ois oiu oo- ood ooi ooo oop oos op- opd opi opo opp ops os- osd osi oso osp oss osu ou- oud oui ouo oup ous p-p pdd pdi pdo pdp pds pdu pid pii pio pip pis piu pod poi poo pop pos pou ppd ppi ppo ppp pps ppu ps- psd psi pso psp pss psu pud pui pup pus puu sdd sdi sdo sdp sds sdu sid sii sio sip sis siu sod soi soo sop sos sou spd spi spo spp sps spu ss- ssd ssi sso ssp sss ssu sud sui suo sup sus suu udd udi udo udp uds udu uid uii uio uip uis uiu uod uoo uop uos up- upd upi upo upp ups upu usd usi uso usp uss usu uus uuu