-er -up b-p b-u bbb bbc bbd bbe bbn bbo bbp bbr bbt bbu bcb bcc bcd bce bcn bco bcp bcr bct bcu bdb bdc bdd bde bdo bdp bdr bdt bdu be- beb bec bed bee ben beo bep ber bet beu bnb bnc bnd bne bnn bno bnp bnr bnt bnu bob boc bod boe bon boo bop bor bot bou bpb bpc bpd bpe bpn bpo bpp bpr bpt bpu brb brd bre brn bro brp brr brt bru btb btc btd bte btn bto btp btr btt btu bub buc bud bue bun buo bup bur but buu c-- cbb cbc cbd cbe cbn cbo cbp cbr cbt cbu ccb ccc ccd cce ccn cco ccp ccr cct ccu cdb cdc cdd cde cdn cdo cdp cdr cdt cdu ce- ceb cec ced cee cen ceo cep cer cet ceu cn- cnb cnc cnd cne cnn cno cnp cnr cnt cnu co- cob coc cod coe con coo cop cor cot cou cpb cpc cpd cpe cpn cpo cpp cpr cpt cpu crb crc crd cre crn cro crp crr crt cru ctb ctc ctd cte ctn cto ctp ctr ctt ctu cub cuc cud cue cun cuo cup cur cut cuu dbb dbc dbd dbe dbn dbo dbp dbr dbt dbu dcb dcc dcd dce dcn dco dcp dcr dct dcu ddb ddc ddd dde ddn ddo ddp ddr ddt ddu de- deb dec ded dee den deo dep der det deu dnb dnc dnd dne dnn dno dnp dnr dnt dob doc dod doe don doo dop dor dot dou dpb dpc dpd dpe dpn dpo dpp dpr dpt dpu drb drc drd dre drn dro drp drr drt dru dtb dtc dtd dte dtn dto dtp dtr dtt dtu dub duc dud due dun duo dup dur dut ebb ebc ebd ebe ebn ebo ebp ebr ebt ebu ec- ecb ecc ecd ece ecn eco ecr ect ecu ed- edb edc edd ede edn edo edp edr edt edu eeb eec eed eee een eeo eep eer eet en- enb enc end ene enn eno enp enr ent enu eo- eob eoc eod eoe eon eoo eop eor eot eou ep- epb epc epd epe epn epo epp epr ept epu erb erc erd ere ern ero erp err ert eru etb etc etd ete etn eto etp etr ett etu eu- eub euc eud eue eun eup eur eut nbb nbc nbd nbe nbn nbo nbp nbr nbt nbu ncb ncc ncd nce ncn nco ncp ncr nct ncu ndb ndc ndd nde ndn ndo ndp ndr ndt ndu ne- neb nec ned nee nen neo nep ner net neu nnb nnc nne nnn nno nnp nnt nnu no- nob noc nod noe non noo nop nor not nou npb npc npd npe npn npo npp npr npt npu nrb nrc nrd nre nrn nro nrp nrr nrt nru ntb ntc ntd nte ntn nto ntp ntr ntt ntu nub nuc nud nue nun nuo nup nur nut nuu ob- obb obc obd obe obn obo obp obr obt obu oc- ocb occ ocd ocn oco ocp ocr oct ocu odb odc odd ode odn odo odp odr odt odu oeb oec oed oee oen oeo oep oer oet on- onb onc ond one onn ono onp onr ont onu oo- oob ooc ood oon ooo oop oor oot op- opb opc opd ope opn opo opp opr opt or- orb orc ord ore orn oro orp orr ort oru ot- otb otc otd ote otn oto otp otr ott otu ou- ouc oud oue oun ouo oup our out p-p pbb pbc pbd pbe pbn pbo pbp pbr pbt pbu pcb pcc pcd pce pcn pco pcp pcr pct pcu pdb pdc pdd pde pdn pdo pdp pdr pdt pdu peb pec ped pee pen peo pep per pet peu pn- pnb pnc pnd pne pnn pno pnp pnr pnt pnu pob poc pod poe pon poo pop por pot pou ppb ppc ppd ppe ppn ppo ppp ppr ppt ppu prb prc prd pre prn pro prp prr prt pru pt- ptb ptc ptd pte ptn pto ptp ptr ptt ptu pub puc pud pue pun pup pur put puu rbb rbc rbd rbe rbn rbo rbp rbr rbt rbu rcb rcc rcd rce rcn rco rcp rcr rct rcu rdb rdc rdd rde rdn rdo rdp rdr rdt rdu re- reb rec red ree ren reo rep rer ret reu rnb rnc rnd rnn rno rnp rnr rnt rnu rob roc rod roe ron roo rop ror rot rou rpb rpc rpd rpe rpn rpo rpp rpr rpt rpu rrb rrc rrd rrn rrp rrr rrt rru rtb rtc rtd rte rtn rto rtp rtr rtt rtu rub ruc rud rue run ruo rup rur rut ruu tbb tbc tbd tbe tbn tbo tbp tbr tbt tbu tcb tcc tcd tce tcn tco tcp tcr tct tcu tdb tdc tdd tde tdn tdo tdp tdr tdt tdu te- teb tec ted tee ten teo tep ter tet teu tnb tnc tnd tne tnn tno tnp tnr tnt to- tob toc tod toe ton too top tor tot tou tpb tpc tpd tpe tpn tpo tpp tpr tpt tpu trb trc trd tre trn tro trp trr trt tru ttb ttc ttd tte ttn tto ttp ttr ttt ttu tub tuc tud tue tun tuo tup tur tut tuu ubb ubc ube ubn ubo ubp ubr ubt ubu ucb ucc ucd uce ucn uco ucp ucr uct ucu udb udc udd ude udn udo udp udr udt udu ueb uec ued uee uen uep uer uet un- unb unc und une unn uno unp unr unt unu uob uoc uod uoe uon uoo uop uor uot up- upb upc upd upe upn upo upp upr upt upu ur- urb urc urd ure urn uro urp urr urt uru utb utc utd ute utn uto utp utr utt utu uuc