-er -ol -up b-p b-u bbb bbc bbe bbl bbn bbo bbp bbr bbt bbu bcb bcc bce bcl bcn bco bcp bcr bct bcu be- beb bec bee bel ben beo bep ber bet beu blb blc ble bll bln blo blp blr blt blu bnb bnc bne bnl bnn bno bnp bnr bnt bnu bob boc boe bol bon boo bop bor bot bou bpb bpc bpe bpl bpn bpo bpp bpr bpt bpu brb bre brl brn bro brp brr brt bru btb btc bte btl btn bto btp btr btt btu bub buc bue bul bun buo bup bur but buu c-- cbb cbc cbe cbl cbn cbo cbp cbr cbt cbu ccb ccc cce ccl ccn cco ccp ccr cct ccu ce- ceb cec cee cel cen ceo cep cer cet ceu cl- clb clc cle cll cln clo clp clr clt clu cn- cnb cnc cne cnl cnn cno cnp cnr cnt cnu co- cob coc coe col con coo cop cor cot cou cpb cpc cpe cpl cpn cpo cpp cpr cpt cpu crb crc cre crl crn cro crp crr crt cru ctb ctc cte ctl ctn cto ctp ctr ctt ctu cub cuc cue cul cun cuo cup cur cut cuu ebb ebc ebe ebl ebn ebo ebp ebr ebt ebu ec- ecb ecc ece ecl ecn eco ecr ect ecu eeb eec eee eel een eeo eep eer eet elb elc ele ell eln elo elp elr elt elu en- enb enc ene enl enn eno enp enr ent enu eo- eob eoc eoe eol eon eoo eop eor eot eou ep- epb epc epe epl epn epo epp epr ept epu erb erc ere erl ern ero erp err ert eru etb etc ete etl etn eto etp etr ett etu eu- eub euc eue eul eun eup eur eut l-p lbb lbc lbe lbl lbo lbp lbr lbt lbu lcb lcc lce lcl lcn lco lcp lcr lct lcu leb lec lee lel len leo lep ler let leu llb llc lle lll lln llo llp llr llt llu lnb lnc lne lnl lnn lno lnp lnr lnt lnu lob loc loe lol lon loo lop lor lot lou lpb lpc lpe lpl lpn lpo lpp lpr lpt lpu lrb lrc lrn lro lrp lrr lrt lru ltb ltc lte ltl lto ltp ltr ltt ltu lub luc lue lul lun luo lup lur lut luu nbb nbc nbe nbl nbn nbo nbp nbr nbt nbu ncb ncc nce ncl ncn nco ncp ncr nct ncu ne- neb nec nee nel nen neo nep ner net neu nlb nlc nle nll nln nlo nlp nlr nlt nlu nnb nnc nne nnl nnn nno nnp nnt nnu no- nob noc noe nol non noo nop nor not nou npb npc npe npl npn npo npp npr npt npu nrb nrc nre nrl nrn nro nrp nrr nrt nru ntb ntc nte ntn nto ntp ntr ntt ntu nub nuc nue nul nun nuo nup nur nut nuu ob- obb obc obe obl obn obo obp obr obt obu oc- ocb occ ocl ocn oco ocp ocr oct ocu oeb oec oee oel oen oeo oep oer oet olb olc ole oll oln olo olp olt olu on- onb onc one onl onn ono onp onr ont onu oo- oob ooc ool oon ooo oop oor oot op- opb opc ope opl opn opo opp opr opt or- orb orc ore orl orn oro orp orr ort oru ot- otb otc ote otl otn oto otp otr ott otu ou- ouc oue oul oun ouo oup our out p-p pbb pbc pbe pbl pbn pbo pbp pbr pbt pbu pcb pcc pce pcl pcn pco pcp pcr pct pcu peb pec pee pel pen peo pep per pet peu plb plc ple pll pln plo plp plr plt plu pn- pnb pnc pne pnl pnn pno pnp pnr pnt pnu pob poc poe pol pon poo pop por pot pou ppb ppc ppe ppl ppn ppo ppp ppr ppt ppu prb prc pre prl prn pro prp prr prt pru pt- ptb ptc pte ptl ptn pto ptp ptr ptt ptu pub puc pue pul pun pup pur put puu rbb rbc rbe rbl rbn rbo rbp rbr rbt rbu rcb rcc rce rcl rcn rco rcp rcr rct rcu re- reb rec ree rel ren reo rep rer ret reu rlc rle rll rln rlo rlp rlr rlt rlu rnb rnc rnn rno rnp rnr rnt rnu rob roc roe rol ron roo rop ror rot rou rpb rpc rpe rpl rpn rpo rpp rpr rpt rpu rrb rrc rrl rrn rrp rrr rrt rru rtb rtc rte rtl rtn rto rtp rtr rtt rtu rub ruc rue run ruo rup rur rut ruu tbb tbc tbe tbl tbn tbo tbp tbr tbt tbu tcb tcc tce tcl tcn tco tcp tcr tct tcu te- teb tec tee tel ten teo tep ter tet teu tlc tle tll tln tlo tlp tlr tlt tlu tnb tnc tne tnl tnn tno tnp tnr tnt to- tob toc toe tol ton too top tor tot tou tpb tpc tpe tpl tpn tpo tpp tpr tpt tpu trb trc tre trl trn tro trp trr trt tru ttb ttc tte ttl ttn tto ttp ttr ttt ttu tub tuc tue tul tun tuo tup tur tut tuu ubb ubc ube ubl ubn ubo ubp ubr ubt ubu ucb ucc uce ucl ucn uco ucp ucr uct ucu ueb uec uee uel uen uep uer uet ulb ulc ule ull uln ulo ulp ulr ult ulu un- unb unc une unl unn uno unp unr unt unu uob uoc uoe uol uon uoo uop uor uot up- upb upc upe upn upo upp upr upt upu ur- urb urc ure url urn uro urp urr urt uru utb utc ute utl utn uto utp utr utt utu uuc uue uun uur uut uuu