bbb bbd bbi bbo bbr bbs bdb bdd bdi bdo bdr bds bdv bi- bib bid bii bio bir bis biv bob bod boi boo bor bos bov brb brd bri bro brr brs brv bsb bsd bsi bso bsr bss bsv bvb bvd bvi bvo bvr bvs bvv dbb dbd dbi dbo dbr dbs dbv ddb ddd ddi ddo ddr dds di- dib did dii dio dir dis div dob dod doi doo dor dos dov drb drd dri dro drr drs drv dsb dsd dsi dso dsr dss dsv dvb dvd dvi dvr dvs i-d i-v ibb ibd ibi ibo ibr ibs ibv idb idd idi ido idr ids idv iib iid iii iio iir iis io- iob iod ioi ioo ior ios iov ir- irb ird iri iro irr irs irv is- isb isd isi iso isr iss isv ivb ivd ivi ivo ivr ivs ivv o-i ob- obb obd obi obo obr obs obv odb odd odi odo odr ods odv oib oid oii oio oir ois oiv oo- oob ood ooi ooo oor oos oov or- orb ord ori oro orr ors orv os- osb osd osi oso osr oss osv ov- ovb ovd ovi ovo ovs ovv rbb rbd rbi rbo rbr rbs rdb rdd rdi rdo rdr rds rdv rib rid rii rio rir ris riv rob rod roi roo ror ros rov rrb rrd rri rrr rrs rsb rsd rsi rso rsr rss rsv rvb rvd rvi rvo rvr rvs rvv sbb sbd sbi sbo sbr sbs sbv sdb sdd sdi sdo sdr sds sdv sib sid sii sio sir sis siv sob sod soi soo sor sos sov sr- srb srd sri sro srr srs srv ss- ssb ssd ssi sso ssr sss ssv svb svd svi svo svr svs svv vbd vbi vbo vbr vbs vbv vdb vdd vdi vdo vdr vds vdv vi- vib vid vii vio vir vis viv vob vod voi voo vor vos vov vrb vrd vri vrr vrs vsb vsd vsi vso vsr vss vsv vvb vvi vvo vvr vvs vvv