-er -up b-p b-u bbb bbe bbi bbn bbo bbp bbr bbt bbu be- beb bee bei ben beo bep ber bet beu bi- bib bie bii bin bio bip bir bit biu bnb bne bni bnn bno bnp bnr bnt bnu bob boe boi bon boo bop bor bot bou bpb bpe bpi bpn bpo bpp bpr bpt bpu brb bre bri brn bro brp brr brt bru btb bte bti btn bto btp btr btt btu bub bue bui bun buo bup bur but buu ebb ebe ebi ebn ebo ebp ebr ebt ebu eeb eee een eeo eep eer eet eib eie eii ein eio eip eir eit eiu en- enb ene eni enn eno enp enr ent enu eo- eob eoe eoi eon eoo eop eor eot eou ep- epb epe epi epn epo epp epr ept epu erb ere eri ern ero erp err ert eru etb ete eti etn eto etp etr ett etu eu- eub eue eui eun eup eur eut ibb ibe ibi ibn ibo ibp ibr ibt ibu ie- iee iei ien iep ier iet iib iie iii iin iio iip iir iit iiu in- inb ine ini inn ino inp inr int inu io- iob ioe ioi ion ioo iop ior iot iou ipb ipe ipi ipn ipo ipp ipr ipt ipu ir- irb ire iri irn iro irp irr irt iru itb ite iti itn ito itp itt itu iu- iub iue iui iup iur iut n-i nbb nbe nbi nbn nbo nbp nbr nbt nbu ne- neb nee nei nen neo nep ner net neu nib nie nii nin nio nip nir nit niu nnb nne nni nnn nno nnp nnt nnu no- nob noe noi non noo nop nor not nou npb npe npi npn npo npp npr npt npu nrb nre nri nrn nro nrp nrr nrt nru ntb nte nti ntn nto ntp ntr ntt ntu nub nue nui nun nuo nup nur nut nuu o-i ob- obb obe obi obn obo obp obr obt obu oeb oee oei oen oeo oep oer oet oib oie oii oin oio oip oir oit oiu on- onb one oni onn ono onp onr ont onu oo- oob ooi oon ooo oop oor oot op- opb ope opi opn opo opp opr opt or- orb ore ori orn oro orp orr ort oru ot- otb ote oti otn oto otp otr ott otu ou- oue oui oun ouo oup our out p-p pbb pbe pbi pbn pbo pbp pbr pbt pbu peb pee pei pen peo pep per pet peu pib pie pii pin pio pip pir pit piu pn- pnb pne pni pnn pno pnp pnr pnt pnu pob poe poi pon poo pop por pot pou ppb ppe ppi ppn ppo ppp ppr ppt ppu prb pre pri prn pro prp prr prt pru pt- ptb pte pti ptn pto ptp ptr ptt ptu pub pue pui pun pup pur put puu rbb rbe rbi rbn rbo rbp rbr rbt rbu re- reb ree rei ren reo rep rer ret reu rib rie rii rin rio rip rir rit rnb rni rnn rno rnp rnr rnt rnu rob roe roi ron roo rop ror rot rou rpb rpe rpi rpn rpo rpp rpr rpt rpu rrb rri rrn rrp rrr rrt rru rtb rte rti rtn rto rtp rtr rtt rtu rub rue rui run ruo rup rur rut ruu tbb tbe tbi tbn tbo tbp tbr tbt tbu te- teb tee tei ten teo tep ter tet teu tib tie tii tin tio tip tir tit tiu tnb tne tni tnn tno tnp tnr tnt to- tob toe toi ton too top tor tot tou tpb tpe tpi tpn tpo tpp tpr tpt tpu trb tre tri trn tro trp trr trt tru ttb tte tti ttn tto ttp ttr ttt ttu tub tue tui tun tuo tup tur tut tuu ubb ube ubi ubn ubo ubp ubr ubt ubu ueb uee uei uen uep uer uet uib uie uii uin uio uip uir uit uiu un- unb une uni unn uno unp unr unt unu uob uoe uon uoo uop uor uot up- upb upe upi upn upo upp upr upt upu ur- urb ure uri urn uro urp urr urt uru utb ute uti utn uto utp utr utt utu uue uun uur uut uuu