-er b-u bbb bbd bbe bbi bbn bbo bbr bbu bbx bdb bdd bde bdi bdo bdr bdu bdx be- beb bed bee bei ben beo ber beu bex bi- bib bid bie bii bin bio bir biu bix bnb bnd bne bni bnn bno bnr bnu bnx bob bod boe boi bon boo bor bou box brb brd bre bri brn bro brr bru brx bub bud bue bui bun buo bur buu bux bxb bxd bxi bxn bxo bxx dbb dbd dbe dbi dbn dbo dbr dbu dbx ddb ddd dde ddi ddn ddo ddr ddu ddx de- deb ded dee dei den deo der deu dex di- dib did die dii din dio dir diu dix dnb dnd dne dni dnn dno dnr dob dod doe doi don doo dor dou dox drb drd dre dri drn dro drr dru drx dub dud due dui dun duo dur dux dxd dxi dxn dxo dxr dxx ebb ebd ebe ebi ebn ebo ebr ebu ebx ed- edb edd ede edi edn edo edr edu edx eeb eed eee een eeo eer eex eib eid eie eii ein eio eir eiu eix en- enb end ene eni enn eno enr enu eo- eob eod eoe eoi eon eoo eor eou erb erd ere eri ern ero err eru eu- eub eud eue eui eun eur eux ex- exd exe exi exo exr exu exx i-d ibb ibd ibe ibi ibn ibo ibr ibu ibx idb idd ide idi idn ido idr idu idx ie- ied iee iei ien ier iex iib iid iie iii iin iio iir iiu iix in- inb ind ine ini inn ino inr inu inx io- iob iod ioe ioi ion ioo ior iou ir- irb ird ire iri irn iro irr iru irx iu- iub iud iue iui iur ixe ixi ixn n-i nbb nbd nbe nbi nbn nbo nbr nbu nbx ndb ndd nde ndi ndn ndo ndr ndu ne- neb ned nee nei nen neo ner neu nex nib nid nie nii nin nio nir niu nix nnb nne nni nnn nno nnu no- nob nod noe noi non noo nor nou nox nrb nrd nre nri nrn nro nrr nru nrx nub nud nue nui nun nuo nur nuu nux nxd o-i ob- obb obd obe obi obn obo obr obu obx odb odd ode odi odn odo odr odu oeb oed oee oei oen oeo oer oex oib oid oie oii oin oio oir oiu on- onb ond one oni onn ono onr onu onx oo- oob ood ooi oon ooo oor oox or- orb ord ore ori orn oro orr oru orx ou- oud oue oui oun ouo our ox- oxb oxi oxn oxo oxx rbb rbd rbe rbi rbn rbo rbr rbu rbx rdb rdd rde rdi rdn rdo rdr rdu rdx re- reb red ree rei ren reo rer reu rex rib rid rie rii rin rio rir rix rnb rnd rni rnn rno rnr rnu rob rod roe roi ron roo ror rou rox rrb rrd rri rrn rrr rru rub rud rue rui run ruo rur ruu rux rxr ubb ube ubi ubn ubo ubr ubu ubx udb udd ude udi udn udo udr udu udx ueb ued uee uei uen uer uib uid uie uii uin uio uir uiu un- unb und une uni unn uno unr unu unx uob uod uoe uon uoo uor uox ur- urb urd ure uri urn uro urr uru urx uue uun uur uuu uxb uxo uxr uxu xbe xbr xbx xdb xde xdi xdr xed xee xen xer xeu xex xie xii xin xio xiu xix xno xnu xod xoi xon xoo xor xox xrd xrx xue xui xun xxi xxo xxx