-er bbb bbd bbe bbn bbo bbr bbt bdb bdd bde bdo bdr bdt bdv be- beb bed bee ben beo ber bet bev bnb bnd bne bnn bno bnr bnt bnv bob bod boe bon boo bor bot bov brb brd bre brn bro brr brt brv btb btd bte btn bto btr btt btv bvb bvd bve bvn bvo bvr bvt bvv dbb dbd dbe dbn dbo dbr dbt dbv ddb ddd dde ddn ddo ddr ddt de- deb ded dee den deo der det dev dnb dnd dne dnn dno dnr dnt dob dod doe don doo dor dot dov drb drd dre drn dro drr drt drv dtb dtd dte dtn dto dtr dtt dtv dvb dvd dve dvn dvr dvt ebb ebd ebe ebn ebo ebr ebt ebv ed- edb edd ede edn edo edr edt eeb eed eee een eeo eer eet eev en- enb end ene enn eno enr ent env eo- eob eod eoe eon eoo eor eot erb erd ere ern ero err ert erv etb etd ete etn eto etr ett etv evb evd eve evn evo evr evt evv nbb nbd nbe nbn nbo nbr nbt nbv ndb ndd nde ndn ndo ndr ndt ndv ne- neb ned nee nen neo ner net nev nnb nne nnn nno nnt nnv no- nob nod noe non noo nor not nov nrb nrd nre nrn nro nrr nrt nrv ntb ntd nte ntn nto ntr ntt ntv nvb nvd nve nvn nvt nvv ob- obb obd obe obn obo obr obt obv odb odd ode odn odo odr odt odv oeb oed oee oen oeo oer oet on- onb ond one onn ono onr ont oo- oob ood oon ooo oor oot oov or- orb ord ore orn oro orr ort orv ot- otb otd ote otn oto otr ott otv ov- ovb ovd ove ovo ovv rbb rbd rbe rbn rbo rbr rbt rdb rdd rde rdn rdo rdr rdt rdv re- reb red ree ren reo rer ret rev rnb rnd rnn rno rnr rnt rnv rob rod roe ron roo ror rot rov rrb rrd rrn rrr rrt rtb rtd rte rtn rto rtr rtt rtv rvb rvd rve rvn rvo rvr rvt rvv tbb tbd tbe tbn tbo tbr tbt tbv tdb tdd tde tdn tdo tdr tdt tdv te- teb ted tee ten teo ter tet tev tnb tnd tne tnn tno tnr tnt to- tob tod toe ton too tor tot tov trb trd tre trn tro trr trt trv ttb ttd tte ttn tto ttr ttt ttv tvb tvd tve tvn tvo tvr tvt v-e vbd vbo vbr vbv vdb vdd vde vdo vdr vdt vdv veb ved vee ven veo ver vet vn- vnd vno vnr vnv vob vod voe von voo vor vot vov vrb vrd vre vrn vrr vrt vtb vte vto vtr vtt vtv vvb vvo vvr vvt vvv