-er bbb bbd bbe bbg bbo bbr bdb bdd bde bdg bdo bdr bdz be- beb bed bee beg beo ber bez bgb bgd bge bgg bgo bgr bgz bob bod boe bog boo bor boz brb brd bre brg bro brr brz bzd bze bzo bzr bzz dbb dbd dbe dbg dbo dbr dbz ddb ddd dde ddg ddo ddr ddz de- deb ded dee deg deo der dez dgd dge dgg dgr dgz dob dod doe dog doo dor doz drb drd dre drg dro drr drz dzb dzd dze dzo dzr ebb ebd ebe ebg ebo ebr ed- edb edd ede edg edo edr eeb eed eee eeg eeo eer egb egd ege egg ego egr eo- eob eod eoe eog eoo eor erb erd ere erg ero err erz eze ezo ezr ezz g-d gbd gbe gbg gbo gbr gbz gdb gdd gde gdo gdr ge- geb ged gee geg geo ger gez ggb ggd ggg ggo ggr ggz gob god goe gog goo gor goz grb grd gre grg gro grr gzo gzr ob- obb obd obe obg obo obr odb odd ode odg odo odr oeb oed oee oeg oeo oer ogd oge ogg ogo oo- oob ood oog ooo oor or- orb ord ore org oro orr orz oze ozo ozz rbb rbd rbe rbg rbo rbr rdb rdd rde rdg rdo rdr re- reb red ree reg reo rer rez rgb rgd rge rgg rgo rgr rob rod roe rog roo ror roz rrb rrd rrg rrr rzb rze rzo z-g zbb zbr zeb zed zee zeo zer zez zgb zgg zo- zob zod zoe zog zoo zor zro zzr zzz