-er -ic -up b-p b-u bbb bbc bbe bbi bbk bbl bbp bbr bbt bbu bcb bcc bce bci bck bcl bcp bcr bct bcu be- beb bec bee bei bek bel bep ber bet beu bi- bib bic bie bii bik bil bip bir bit biu bkb bkc bke bkk bkl bkp bkr bkt blb blc ble bli blk bll blp blr blt blu bpb bpc bpe bpi bpl bpp bpr bpt bpu brb bre bri brk brl brp brr brt bru btb btc bte bti btk btl btp btr btt btu bub buc bue bui buk bul bup bur but buu c-- cbb cbc cbe cbi cbk cbl cbp cbr cbt cbu ccb ccc cce cci cck ccl ccp ccr cct ccu ce- ceb cec cee cei cek cel cep cer cet ceu ci- cib cic cie cii cik cil cip cir cit ciu ckb ckc cki ckt cl- clb clc cle cli clk cll clp clr clt clu cpb cpc cpe cpi cpk cpl cpp cpr cpt cpu crb crc cre cri crk crl crp crr crt cru ctb ctc cte cti ctk ctl ctp ctr ctt ctu cub cuc cue cui cuk cul cup cur cut cuu ebb ebc ebe ebi ebk ebl ebp ebr ebt ebu ec- ecb ecc ece eci eck ecl ecr ect ecu eeb eec eee eek eel eep eer eet eib eic eie eii eik eil eip eir eit eiu ekb ekc eke eki ekl ekp ekr ekt eku elb elc ele eli elk ell elp elr elt elu ep- epb epc epe epi epl epp epr ept epu erb erc ere eri erk erl erp err ert eru etb etc ete eti etk etl etp etr ett etu eu- eub euc eue eui eul eup eur eut ibb ibc ibe ibi ibk ibl ibp ibr ibt ibu icb icc ice ici ick icl icp icr ict icu ie- iec iee iei iek iel iep ier iet iib iic iie iii iil iip iir iit iiu ikb ikc ike iki ikk ikl ikr ikt iku il- ilb ilc ile ili ilk ill ilp ilr ilt ilu ipb ipc ipe ipi ipl ipp ipr ipt ipu ir- irb irc ire iri irk irl irp irr irt iru itb itc ite iti itk itl itp itt itu iu- iub iuc iue iui iup iur iut k-t kbb kbc kbe kbi kbk kbl kbp kbr kbu kcb kcc kce kci kck kcl kcp kcr kct kcu ke- keb kec kee kei kek kel kep ker ket kib kic kie kii kik kil kip kir kit kiu kkb kkc kke kki kkk kkl kkp kkr kkt kku kl- klb klc kli klr klt klu kpc kpe kpi kpk kpl kpp kpr kpt kpu krc kri krk krl krp krr krt kru ktb ktc kte ktk ktl ktp ktr ktt ktu kub kuc kue kui kuk kul kup kur kut kuu l-p lbb lbc lbe lbi lbk lbl lbp lbr lbt lbu lcb lcc lce lci lck lcl lcp lcr lct lcu leb lec lee lei lek lel lep ler let leu lib lic lie lii lik lil lip lir lit liu lkb lkl lkp lkr lkt llb llc lle lli llk lll llp llr llt llu lpb lpc lpe lpi lpk lpl lpp lpr lpt lpu lrb lrc lri lrk lrp lrr lrt lru ltb ltc lte lti ltk ltl ltp ltr ltt ltu lub luc lue lui luk lul lup lur lut luu p-p pbb pbc pbe pbi pbk pbl pbp pbr pbt pbu pcb pcc pce pci pck pcl pcp pcr pct pcu peb pec pee pei pek pel pep per pet peu pib pic pie pii pik pil pip pir pit piu pkb pkc pke pki pkl pkp pkr pkt pku plb plc ple pli plk pll plp plr plt plu ppb ppc ppe ppi ppk ppl ppp ppr ppt ppu prb prc pre pri prk prl prp prr prt pru pt- ptb ptc pte pti ptk ptl ptp ptr ptt ptu pub puc pue pui puk pul pup pur put puu rbb rbc rbe rbi rbk rbl rbp rbr rbt rbu rcb rcc rce rci rcl rcp rcr rct rcu re- reb rec ree rei rek rel rep rer ret reu rib ric rie rii rik ril rip rir rit rkb rkc rke rkk rkp rkt rku rlc rle rli rll rlp rlr rlt rlu rpb rpc rpe rpi rpk rpl rpp rpr rpt rpu rrb rrc rri rrk rrl rrp rrr rrt rru rtb rtc rte rti rtk rtl rtp rtr rtt rtu rub ruc rue rui ruk rup rur rut ruu tbb tbc tbe tbi tbk tbl tbp tbr tbt tbu tcb tcc tce tci tck tcl tcp tcr tct tcu te- teb tec tee tei tek tel tep ter tet teu tib tic tie tii tik til tip tir tit tiu tkb tkc tke tkk tkl tkp tkr tkt tlc tle tli tlk tll tlp tlr tlt tlu tpb tpc tpe tpi tpk tpl tpp tpr tpt tpu trb trc tre tri trk trl trp trr trt tru ttb ttc tte tti ttk ttl ttp ttr ttt ttu tub tuc tue tui tuk tul tup tur tut tuu ubb ubc ube ubi ubk ubl ubp ubr ubt ubu ucb ucc uce uci uck ucl ucp ucr uct ucu ueb uec uee uei uel uep uer uet uib uic uie uii uil uip uir uit uiu ukb ukc uke uki ukk ukl ukp ukr uku ulb ulc ule uli ulk ull ulp ulr ult ulu up- upb upc upe upi upk upp upr upt upu ur- urb urc ure uri urk url urp urr urt uru utb utc ute uti utk utl utp utr utt utu uuc uue uur uut uuu