-er bbb bbd bbe bbi bbo bbr bbs bdb bdd bde bdi bdo bdr bds bdv be- beb bed bee bei beo ber bes bev bi- bib bid bie bii bio bir bis biv bob bod boe boi boo bor bos bov brb brd bre bri bro brr brs brv bsb bsd bse bsi bso bsr bss bsv bvb bvd bve bvi bvo bvr bvs bvv dbb dbd dbe dbi dbo dbr dbs dbv ddb ddd dde ddi ddo ddr dds de- deb ded dee dei deo der des dev di- dib did die dii dio dir dis div dob dod doe doi doo dor dos dov drb drd dre dri dro drr drs drv dsb dsd dse dsi dso dsr dss dsv dvb dvd dve dvi dvr dvs ebb ebd ebe ebi ebo ebr ebs ebv ed- edb edd ede edi edo edr eds eeb eed eee eeo eer ees eev eib eid eie eii eio eir eis eiv eo- eob eod eoe eoi eoo eor eos erb erd ere eri ero err ers erv es- esb esd ese esi eso esr ess esv evb evd eve evi evo evr evs evv i-d i-v ibb ibd ibe ibi ibo ibr ibs ibv idb idd ide idi ido idr ids idv ie- ied iee iei ier ies iev iib iid iie iii iio iir iis io- iob iod ioe ioi ioo ior ios iov ir- irb ird ire iri iro irr irs irv is- isb isd ise isi iso isr iss isv ivb ivd ive ivi ivo ivr ivs ivv o-i ob- obb obd obe obi obo obr obs obv odb odd ode odi odo odr ods odv oeb oed oee oei oeo oer oes oib oid oie oii oio oir ois oiv oo- oob ood ooi ooo oor oos oov or- orb ord ore ori oro orr ors orv os- osb osd ose osi oso osr oss osv ov- ovb ovd ove ovi ovo ovs ovv rbb rbd rbe rbi rbo rbr rbs rdb rdd rde rdi rdo rdr rds rdv re- reb red ree rei reo rer res rev rib rid rie rii rio rir ris riv rob rod roe roi roo ror ros rov rrb rrd rri rrr rrs rsb rsd rse rsi rso rsr rss rsv rvb rvd rve rvi rvo rvr rvs rvv sbb sbd sbe sbi sbo sbr sbs sbv sdb sdd sde sdi sdo sdr sds sdv se- seb sed see sei seo ser ses sev sib sid sie sii sio sir sis siv sob sod soe soi soo sor sos sov sr- srb srd sre sri sro srr srs srv ss- ssb ssd sse ssi sso ssr sss ssv svb svd sve svi svo svr svs svv v-e vbd vbi vbo vbr vbs vbv vdb vdd vde vdi vdo vdr vds vdv veb ved vee vei veo ver ves vi- vib vid vie vii vio vir vis viv vob vod voe voi voo vor vos vov vrb vrd vre vri vrr vrs vsb vsd vse vsi vso vsr vss vsv vvb vvi vvo vvr vvs vvv