-er b-u bbb bbe bbf bbg bbi bbn bbo bbr bbu bbx be- beb bee bef beg bei ben beo ber beu bex bfb bfe bff bfg bfi bfn bfo bfr bfu bfx bgb bge bgf bgg bgi bgn bgo bgr bgu bgx bi- bib bie bif big bii bin bio bir biu bix bnb bne bnf bng bni bnn bno bnr bnu bnx bob boe bof bog boi bon boo bor bou box brb bre brf brg bri brn bro brr bru brx bub bue buf bug bui bun buo bur buu bux bxb bxi bxn bxo bxx ebb ebe ebf ebg ebi ebn ebo ebr ebu ebx eeb eee eef eeg een eeo eer eex ef- efb efe eff efg efi efo efr efx egb ege egf egg egi egn ego egr egu egx eib eie eif eig eii ein eio eir eiu eix en- enb ene enf eng eni enn eno enr enu eo- eob eoe eof eog eoi eon eoo eor eou erb ere erf erg eri ern ero err eru eu- eub eue euf eug eui eun eur eux ex- exe exi exo exr exu exx fbb fbe fbf fbg fbi fbn fbo fbr fbu fbx feb fee fef feg fei fen feo fer feu fex ffe fff ffg ffi ffn ffo ffr ffu ffx fgb fge fgf fgg fgi fgn fgr fib fie fif fig fii fin fir fiu fix fnb fne fnf fng fni fnn fnr fnu fnx fob foe fof fog foi fon foo for fou fox frb fre frf frg fri frn fro frr fru fub fue fuf fug fui fun fuo fur fuu fux fxe fxg fxi fxr fxu fxx gbe gbf gbg gbi gbn gbo gbr gbu gbx ge- geb gee gef geg gei gen geo ger geu gex gfb gfe gff gfi gfo gfr gfx ggb ggg ggi ggn ggo ggr ggu gib gie gif gig gii gin gio gir giu gnb gne gnf gni gnn gno gnr gnu gob goe gof gog goi gon goo gor gou gox grb gre grf grg gri grn gro grr gru grx gu- gub gue guf gug gui gun guo gur guu gxf i-f ibb ibe ibf ibg ibi ibn ibo ibr ibu ibx ie- iee ief ieg iei ien ier iex ifb ife iff ifg ifi ifn ifo ifr ifu ifx igb ige igf igg igi ign igo igr igu iib iie iif iii iin iio iir iiu iix in- inb ine inf ing ini inn ino inr inu inx io- iob ioe iof iog ioi ion ioo ior iou ir- irb ire irf irg iri irn iro irr iru irx iu- iub iue iug iui iur ixe ixi ixn n-i nbb nbe nbf nbg nbi nbn nbo nbr nbu nbx ne- neb nee nef neg nei nen neo ner neu nex nfb nfe nff nfi nfn nfo nfr nfu ngb nge ngf ngg ngi ngn ngo ngu nib nie nif nig nii nin nio nir niu nix nnb nne nnf nng nni nnn nno nnu no- nob noe nof nog noi non noo nor nou nox nrb nre nrf nrg nri nrn nro nrr nru nrx nub nue nug nui nun nuo nur nuu nux o-i ob- obb obe obf obg obi obn obo obr obu obx oeb oee oef oeg oei oen oeo oer oex of- ofb ofe off ofg ofi ofn ofo ofr ofu ofx oge ogf ogg ogi ogn ogo ogx oib oie oif oii oin oio oir oiu on- onb one onf ong oni onn ono onr onu onx oo- oob oof oog ooi oon ooo oor oox or- orb ore orf org ori orn oro orr oru orx ou- oue ouf oui oun ouo our ox- oxb oxf oxi oxn oxo oxx rbb rbe rbf rbg rbi rbn rbo rbr rbu rbx re- reb ree ref reg rei ren reo rer reu rex rfb rfe rff rfg rfi rfn rfo rfr rfu rgb rge rgf rgg rgi rgn rgo rgr rgx rib rie rif rig rii rin rio rir rix rnb rng rni rnn rno rnr rnu rob roe rof rog roi ron roo ror rou rox rrb rrf rrg rri rrn rrr rru rub rue ruf rug rui run ruo rur ruu rux rxr ubb ube ubf ubg ubi ubn ubo ubr ubu ubx ueb uee uef ueg uei uen uer ufe uff ufg ufi ufn ufo ufr ufu ufx ugb uge ugf ugg ugi ugn ugo ugr ugu ugx uib uie uif uig uii uin uio uir uiu un- unb une unf ung uni unn uno unr unu unx uob uoe uog uon uoo uor uox ur- urb ure urf urg uri urn uro urr uru urx uue uug uun uur uuu uxb uxf uxo uxr uxu xbe xbr xbx xee xeg xen xer xeu xex xfe xfn xfx xge xgi xie xii xin xio xiu xix xno xnu xof xog xoi xon xoo xor xox xrf xrx xue xui xun xxi xxo xxx