ddd ddi ddo ddp ddr dds di- did dii dio dip dir dis div dod doi doo dop dor dos dov dpd dpi dpo dpp dpr dps dpv drd dri dro drp drr drs drv dsd dsi dso dsp dsr dss dsv dvd dvi dvp dvr dvs i-d i-v idd idi ido idp idr ids idv iid iii iio iip iir iis io- iod ioi ioo iop ior ios iov ipd ipi ipo ipp ipr ips ipv ir- ird iri iro irp irr irs irv is- isd isi iso isp isr iss isv ivd ivi ivo ivp ivr ivs ivv o-i odd odi odo odp odr ods odv oid oii oio oip oir ois oiv oo- ood ooi ooo oop oor oos oov op- opd opi opo opp opr ops opv or- ord ori oro orp orr ors orv os- osd osi oso osp osr oss osv ov- ovd ovi ovo ovp ovs ovv p-p pdd pdi pdo pdp pdr pds pdv pid pii pio pip pir pis piv pod poi poo pop por pos pov ppd ppi ppo ppp ppr pps ppv prd pri pro prp prr prs prv ps- psd psi pso psp psr pss psv pvd pvi pvo pvp pvr pvs pvv rdd rdi rdo rdp rdr rds rdv rid rii rio rip rir ris riv rod roi roo rop ror ros rov rpd rpi rpo rpp rpr rps rpv rrd rri rrp rrr rrs rsd rsi rso rsp rsr rss rsv rvd rvi rvo rvp rvr rvs rvv sdd sdi sdo sdp sdr sds sdv sid sii sio sip sir sis siv sod soi soo sop sor sos sov spd spi spo spp spr sps spv sr- srd sri sro srp srr srs srv ss- ssd ssi sso ssp ssr sss ssv svd svi svo svp svr svs svv vdd vdi vdo vdp vdr vds vdv vi- vid vii vio vip vir vis viv vod voi voo vop vor vos vov vpd vpi vpo vpp vpr vps vrd vri vrp vrr vrs vsd vsi vso vsp vsr vss vsv vvi vvo vvr vvs vvv