-er bbb bbd bbe bbg bbi bbn bbo bbr bbx bdb bdd bde bdg bdi bdo bdr bdx be- beb bed bee beg bei ben beo ber bex bgb bgd bge bgg bgi bgn bgo bgr bgx bi- bib bid bie big bii bin bio bir bix bnb bnd bne bng bni bnn bno bnr bnx bob bod boe bog boi bon boo bor box brb brd bre brg bri brn bro brr brx bxb bxd bxi bxn bxo bxx dbb dbd dbe dbg dbi dbn dbo dbr dbx ddb ddd dde ddg ddi ddn ddo ddr ddx de- deb ded dee deg dei den deo der dex dgd dge dgg dgi dgn dgr di- dib did die dig dii din dio dir dix dnb dnd dne dng dni dnn dno dnr dob dod doe dog doi don doo dor dox drb drd dre drg dri drn dro drr drx dxd dxi dxn dxo dxr dxx ebb ebd ebe ebg ebi ebn ebo ebr ebx ed- edb edd ede edg edi edn edo edr edx eeb eed eee eeg een eeo eer eex egb egd ege egg egi egn ego egr egx eib eid eie eig eii ein eio eir eix en- enb end ene eng eni enn eno enr eo- eob eod eoe eog eoi eon eoo eor erb erd ere erg eri ern ero err ex- exd exe exi exo exr exx g-d gbd gbe gbg gbi gbn gbo gbr gbx gdb gdd gde gdi gdn gdo gdr gdx ge- geb ged gee geg gei gen geo ger gex ggb ggd ggg ggi ggn ggo ggr gib gid gie gig gii gin gio gir gnb gnd gne gni gnn gno gnr gob god goe gog goi gon goo gor gox grb grd gre grg gri grn gro grr grx i-d ibb ibd ibe ibg ibi ibn ibo ibr ibx idb idd ide idg idi idn ido idr idx ie- ied iee ieg iei ien ier iex igb igd ige igg igi ign igo igr iib iid iie iii iin iio iir iix in- inb ind ine ing ini inn ino inr inx io- iob iod ioe iog ioi ion ioo ior ir- irb ird ire irg iri irn iro irr irx ixe ixi ixn n-i nbb nbd nbe nbg nbi nbn nbo nbr nbx ndb ndd nde ndg ndi ndn ndo ndr ne- neb ned nee neg nei nen neo ner nex ngb ngd nge ngg ngi ngn ngo nib nid nie nig nii nin nio nir nix nnb nne nng nni nnn nno no- nob nod noe nog noi non noo nor nox nrb nrd nre nrg nri nrn nro nrr nrx nxd o-i ob- obb obd obe obg obi obn obo obr obx odb odd ode odg odi odn odo odr oeb oed oee oeg oei oen oeo oer oex ogd oge ogg ogi ogn ogo ogx oib oid oie oii oin oio oir on- onb ond one ong oni onn ono onr onx oo- oob ood oog ooi oon ooo oor oox or- orb ord ore org ori orn oro orr orx ox- oxb oxi oxn oxo oxx rbb rbd rbe rbg rbi rbn rbo rbr rbx rdb rdd rde rdg rdi rdn rdo rdr rdx re- reb red ree reg rei ren reo rer rex rgb rgd rge rgg rgi rgn rgo rgr rgx rib rid rie rig rii rin rio rir rix rnb rnd rng rni rnn rno rnr rob rod roe rog roi ron roo ror rox rrb rrd rrg rri rrn rrr rxr xbe xbr xbx xdb xde xdi xdr xed xee xeg xen xer xex xge xgi xie xii xin xio xix xno xod xog xoi xon xoo xor xox xrd xrx xxi xxo xxx