b-u bbb bbd bbe bbl bbn bbu bdb bdd bde bdl bdu bdz be- beb bed bee bel ben beu bez blb bld ble bll bln blu blz bnb bnd bne bnl bnn bnu bnz bub bud bue bul bun buu buz bzd bze bzn bzu bzz dbb dbd dbe dbl dbn dbu dbz ddb ddd dde ddl ddn ddu ddz de- deb ded dee del den deu dez dl- dlb dld dle dll dlu dnb dnd dne dnl dnn dnz dub dud due dul dun duz dzb dzd dze dzu ebb ebd ebe ebl ebn ebu ed- edb edd ede edl edn edu eeb eed eee eel een elb eld ele ell eln elu elz en- enb end ene enl enn enu enz eu- eub eud eue eul eun eze ezz lbb lbd lbe lbl lbu ldb ldd lde ldl ldn ldu leb led lee lel len leu lez llb lld lle lll lln llu llz lnb lnd lne lnl lnn lnu lub lud lue lul lun luu luz lzu nbb nbd nbe nbl nbn nbu ndb ndd nde ndl ndn ndu ne- neb ned nee nel nen neu nez nlb nld nle nll nln nlu nlz nnb nne nnl nnn nnu nnz nub nud nue nul nun nuu nzb nzd nze nzz ubb ube ubl ubn ubu udb udd ude udl udn udu ueb ued uee uel uen ulb uld ule ull uln ulu un- unb und une unl unn unu uue uun uuu uzb uzu zbb zbl zeb zed zee zel zen zez znd zne znn zub zud zul zun zuz zzz