-up b-p b-u bbb bbe bbi bbn bbo bbp bbu be- beb bee bei ben beo bep beu bez bi- bib bie bii bin bio bip biu biz bnb bne bni bnn bno bnp bnu bnz bob boe boi bon boo bop bou boz bpb bpe bpi bpn bpo bpp bpu bub bue bui bun buo bup buu buz bze bzn bzo bzp bzu bzz ebb ebe ebi ebn ebo ebp ebu eeb eee een eeo eep eib eie eii ein eio eip eiu en- enb ene eni enn eno enp enu enz eo- eob eoe eoi eon eoo eop eou ep- epb epe epi epn epo epp epu epz eu- eub eue eui eun eup eze ezo ezz ibb ibe ibi ibn ibo ibp ibu ibz ie- iee iei ien iep iib iie iii iin iio iip iiu in- inb ine ini inn ino inp inu io- iob ioe ioi ion ioo iop iou ipb ipe ipi ipn ipo ipp ipu iu- iub iue iui iup iuz ize izi izo izu izz n-i nbb nbe nbi nbn nbo nbp nbu ne- neb nee nei nen neo nep neu nez nib nie nii nin nio nip niu niz nnb nne nni nnn nno nnp nnu nnz no- nob noe noi non noo nop nou noz npb npe npi npn npo npp npu npz nub nue nui nun nuo nup nuu nzb nze nzi nzo nzp nzz o-i ob- obb obe obi obn obo obp obu oeb oee oei oen oeo oep oib oie oii oin oio oip oiu oiz on- onb one oni onn ono onp onu oo- oob ooi oon ooo oop op- opb ope opi opn opo opp ou- oue oui oun ouo oup oze ozo ozu ozz p-p pbb pbe pbi pbn pbo pbp pbu pbz peb pee pei pen peo pep peu pez pib pie pii pin pio pip piu piz pn- pnb pne pni pnn pno pnp pnu pob poe poi pon poo pop pou poz ppb ppe ppi ppn ppo ppp ppu ppz pub pue pui pun pup puu puz pzp ubb ube ubi ubn ubo ubp ubu ueb uee uei uen uep uib uie uii uin uio uip uiu un- unb une uni unn uno unp unu uob uoe uon uoo uop up- upb upe upi upn upo upp upu upz uue uun uuu uzb uzi uzo uzu zbb zeb zee zen zeo zep zez zib zie zin zio zip ziz zne znn zno znp zo- zob zoe zoi zon zoo zou zpe zpi zpo zpp zpu zub zui zun zuz zzz