-er -ol bbb bbd bbe bbh bbl bbo bbr bdb bdd bde bdh bdl bdo bdr be- beb bed bee beh bel beo ber bhb bhd bhe bhh bhl bho bhr blb bld ble blh bll blo blr bob bod boe boh bol boo bor brb brd bre brh brl bro brr dbb dbd dbe dbh dbl dbo dbr ddb ddd dde ddh ddl ddo ddr de- deb ded dee deh del deo der dh- dhb dhd dhe dhh dhl dho dhr dl- dlb dld dle dlh dll dlo dlr dob dod doe doh dol doo dor drb drd dre drl dro drr ebb ebd ebe ebh ebl ebo ebr ed- edb edd ede edh edl edo edr eeb eed eee eel eeo eer ehb ehd ehe ehh ehl eho ehr elb eld ele elh ell elo elr eo- eob eod eoe eoh eol eoo eor erb erd ere erh erl ero err hbb hbd hbe hbh hbl hbo hbr hdb hdd hde hdh hdl hdo hdr he- heb hed hee heh hel heo her hhb hhd hhe hhh hhl hho hhr hlb hld hle hlh hll hlo hlr hob hod hoe hoh hol hoo hor hr- hrb hrd hre hrh hrl hro hrr lbb lbd lbe lbh lbl lbo lbr ldb ldd lde ldh ldl ldo ldr leb led lee leh lel leo ler lhb lhd lhh lho lhr llb lld lle lll llo llr lob lod loe loh lol loo lor lrb lrd lrh lro lrr ob- obb obd obe obh obl obo obr odb odd ode odh odl odo odr oeb oed oee oeh oel oeo oer ohd ohe ohh ohl oho ohr olb old ole oll olo oo- oob ood ooh ool ooo oor or- orb ord ore orh orl oro orr rbb rbd rbe rbh rbl rbo rbr rdb rdd rde rdh rdl rdo rdr re- reb red ree reh rel reo rer rh- rhb rhd rhe rhh rhl rho rhr rld rle rlh rll rlo rlr rob rod roe roh rol roo ror rrb rrd rrh rrl rrr