-er -ol bbb bbd bbe bbh bbl bbo bbr bbx bdb bdd bde bdh bdl bdo bdr bdx be- beb bed bee beh bel beo ber bex bhb bhd bhe bhh bhl bho bhr bhx blb bld ble blh bll blo blr blx bob bod boe boh bol boo bor box brb brd bre brh brl bro brr brx bxb bxd bxl bxo bxx dbb dbd dbe dbh dbl dbo dbr dbx ddb ddd dde ddh ddl ddo ddr ddx de- deb ded dee deh del deo der dex dh- dhb dhd dhe dhh dhl dho dhr dl- dlb dld dle dlh dll dlo dlr dlx dob dod doe doh dol doo dor dox drb drd dre drl dro drr drx dxd dxl dxo dxr dxx ebb ebd ebe ebh ebl ebo ebr ebx ed- edb edd ede edh edl edo edr edx eeb eed eee eel eeo eer eex ehb ehd ehe ehh ehl eho ehr elb eld ele elh ell elo elr elx eo- eob eod eoe eoh eol eoo eor erb erd ere erh erl ero err ex- exd exe exh exl exo exr exx hbb hbd hbe hbh hbl hbo hbr hbx hdb hdd hde hdh hdl hdo hdr hdx he- heb hed hee heh hel heo her hex hhb hhd hhe hhh hhl hho hhr hlb hld hle hlh hll hlo hlr hlx hob hod hoe hoh hol hoo hor hox hr- hrb hrd hre hrh hrl hro hrr hxd hxl lbb lbd lbe lbh lbl lbo lbr lbx ldb ldd lde ldh ldl ldo ldr leb led lee leh lel leo ler lex lhb lhd lhh lho lhr lhx llb lld lle lll llo llr lob lod loe loh lol loo lor lox lrb lrd lrh lro lrr lxd lxo lxr lxx ob- obb obd obe obh obl obo obr obx odb odd ode odh odl odo odr oeb oed oee oeh oel oeo oer oex ohd ohe ohh ohl oho ohr olb old ole oll olo oo- oob ood ooh ool ooo oor oox or- orb ord ore orh orl oro orr orx ox- oxb oxo oxx rbb rbd rbe rbh rbl rbo rbr rbx rdb rdd rde rdh rdl rdo rdr rdx re- reb red ree reh rel reo rer rex rh- rhb rhd rhe rhh rhl rho rhr rld rle rlh rll rlo rlr rob rod roe roh rol roo ror rox rrb rrd rrh rrl rrr rxr xbe xbl xbr xbx xdb xde xdh xdr xed xee xel xer xex xhd xlb xld xlr xod xoo xor xox xrd xrx xxl xxo xxx