-er b-u bbb bbd bbe bbi bbn bbr bbt bbu bdb bdd bde bdi bdr bdt bdu bdz be- beb bed bee bei ben ber bet beu bez bi- bib bid bie bii bin bir bit biu biz bnb bnd bne bni bnn bnr bnt bnu bnz brb brd bre bri brn brr brt bru brz btb btd bte bti btn btr btt btu btz bub bud bue bui bun bur but buu buz bzd bze bzn bzr bzu bzz dbb dbd dbe dbi dbn dbr dbt dbu dbz ddb ddd dde ddi ddn ddr ddt ddu ddz de- deb ded dee dei den der det deu dez di- dib did die dii din dir dit diu diz dnb dnd dne dni dnn dnr dnt dnz drb drd dre dri drn drr drt dru drz dtb dtd dte dti dtn dtr dtt dtu dtz dub dud due dui dun dur dut duz dzb dzd dze dzi dzr dzu ebb ebd ebe ebi ebn ebr ebt ebu ed- edb edd ede edi edn edr edt edu eeb eed eee een eer eet eib eid eie eii ein eir eit eiu en- enb end ene eni enn enr ent enu enz erb erd ere eri ern err ert eru erz etb etd ete eti etn etr ett etu etz eu- eub eud eue eui eun eur eut eze ezr ezz i-d ibb ibd ibe ibi ibn ibr ibt ibu ibz idb idd ide idi idn idr idt idu ie- ied iee iei ien ier iet iib iid iie iii iin iir iit iiu in- inb ind ine ini inn inr int inu ir- irb ird ire iri irn irr irt iru itb itd ite iti itn itt itu itz iu- iub iud iue iui iur iut iuz ize izi izu izz n-i nbb nbd nbe nbi nbn nbr nbt nbu ndb ndd nde ndi ndn ndr ndt ndu ne- neb ned nee nei nen ner net neu nez nib nid nie nii nin nir nit niu niz nnb nne nni nnn nnt nnu nnz nrb nrd nre nri nrn nrr nrt nru nrz ntb ntd nte nti ntn ntr ntt ntu ntz nub nud nue nui nun nur nut nuu nzb nzd nze nzi nzz rbb rbd rbe rbi rbn rbr rbt rbu rdb rdd rde rdi rdn rdr rdt rdu re- reb red ree rei ren rer ret reu rez rib rid rie rii rin rir rit riz rnb rnd rni rnn rnr rnt rnu rnz rrb rrd rri rrn rrr rrt rru rtb rtd rte rti rtn rtr rtt rtu rtz rub rud rue rui run rur rut ruu ruz rzb rze tbb tbd tbe tbi tbn tbr tbt tbu tbz tdb tdd tde tdi tdn tdr tdt tdu te- teb ted tee tei ten ter tet teu tez tib tid tie tii tin tir tit tiu tiz tnb tnd tne tni tnn tnr tnt tnz trb trd tre tri trn trr trt tru trz ttb ttd tte tti ttn ttr ttt ttu tub tud tue tui tun tur tut tuu tuz tzd tze tzu ubb ube ubi ubn ubr ubt ubu udb udd ude udi udn udr udt udu ueb ued uee uei uen uer uet uib uid uie uii uin uir uit uiu un- unb und une uni unn unr unt unu ur- urb urd ure uri urn urr urt uru urz utb utd ute uti utn utr utt utu utz uue uun uur uut uuu uzb uzi uzu zbb zbr zbt zdt zeb zed zee zen zer zet zez zib zid zie zin zir zit ziz znd zne znn zte ztr zub zud zui zun zur zut zuz zzr zzt zzz