-al -er -up a-a a-b a-c a-t aaa aab aac aae aal aap aar aas aat aau ab- aba abb abc abe abl abp abr abs abt abu ac- aca acb acc ace acl acp acr acs act acu aea aeb aec aee ael aep aer aes aet aeu al- ala alb alc ale all alp alr als alt alu ap- apa apb apc ape apl app apr aps apt apu ar- ara arb arc are arl arp arr ars art aru as- asa asb asc ase asl asp asr ass ast asu at- ata atb atc ate atl atp atr ats att atu au- aua aub auc aue aul aup aur aus aut b-p b-u baa bab bac bae bal bap bar bas bat bau bba bbb bbc bbe bbl bbp bbr bbs bbt bbu bca bcb bcc bce bcl bcp bcr bcs bct bcu be- bea beb bec bee bel bep ber bes bet beu bla blb blc ble bll blp blr bls blt blu bpa bpb bpc bpe bpl bpp bpr bps bpt bpu bra brb bre brl brp brr brs brt bru bsa bsb bsc bse bsl bsp bsr bss bst bsu bta btb btc bte btl btp btr bts btt btu bua bub buc bue bul bup bur bus but buu c-- caa cab cac cae cal cap car cas cat cau cba cbb cbc cbe cbl cbp cbr cbs cbt cbu cca ccb ccc cce ccl ccp ccr ccs cct ccu ce- cea ceb cec cee cel cep cer ces cet ceu cl- cla clb clc cle cll clp clr cls clt clu cpa cpb cpc cpe cpl cpp cpr cps cpt cpu cra crb crc cre crl crp crr crs crt cru csa csb csc cse csl csp csr css cst csu cta ctb ctc cte ctl ctp ctr cts ctt ctu cua cub cuc cue cul cup cur cus cut cuu eaa eab eac eae eal eap ear eas eat eau eba ebb ebc ebe ebl ebp ebr ebs ebt ebu ec- eca ecb ecc ece ecl ecr ecs ect ecu eea eeb eec eee eel eep eer ees eet ela elb elc ele ell elp elr els elt elu ep- epa epb epc epe epl epp epr eps ept epu era erb erc ere erl erp err ers ert eru es- esa esb esc ese esl esp esr ess est esu eta etb etc ete etl etp etr ets ett etu eu- eua eub euc eue eul eup eur eus eut l-p la- laa lab lac lae lal lap lar las lat lau lba lbb lbc lbe lbl lbp lbr lbs lbt lbu lca lcb lcc lce lcl lcp lcr lcs lct lcu lea leb lec lee lel lep ler les let leu lla llb llc lle lll llp llr lls llt llu lpa lpb lpc lpe lpl lpp lpr lps lpt lpu lra lrb lrc lrp lrr lrs lrt lru lsa lsb lsc lse lsl lsp lsr lss lst lsu lta ltb ltc lte ltl ltp ltr lts ltt ltu lua lub luc lue lul lup lur lus lut luu p-p paa pab pac pae pal pap par pas pat pau pba pbb pbc pbe pbl pbp pbr pbs pbt pbu pca pcb pcc pce pcl pcp pcr pcs pct pcu pea peb pec pee pel pep per pes pet peu pla plb plc ple pll plp plr pls plt plu ppa ppb ppc ppe ppl ppp ppr pps ppt ppu pra prb prc pre prl prp prr prs prt pru ps- psa psb psc pse psl psp psr pss pst psu pt- pta ptb ptc pte ptl ptp ptr pts ptt ptu pua pub puc pue pul pup pur pus put puu ra- raa rab rac rae ral rap rar ras rat rau rba rbb rbc rbe rbl rbp rbr rbs rbt rbu rca rcb rcc rce rcl rcp rcr rcs rct rcu re- rea reb rec ree rel rep rer res ret reu rla rlc rle rll rlp rlr rls rlt rlu rpa rpb rpc rpe rpl rpp rpr rps rpt rpu rra rrb rrc rrl rrp rrr rrs rrt rru rsa rsb rsc rse rsl rsp rsr rss rst rsu rta rtb rtc rte rtl rtp rtr rts rtt rtu rua rub ruc rue rup rur rus rut ruu saa sab sac sae sal sap sar sas sat sau sba sbb sbc sbe sbl sbp sbr sbs sbt sbu sca scb scc sce scl scp scr scs sct scu se- sea seb sec see sel sep ser ses set seu sla slb slc sle sll slp slr sls slt slu spa spb spc spe spl spp spr sps spt spu sr- sra srb src sre srl srp srr srs srt ss- ssa ssb ssc sse ssl ssp ssr sss sst ssu sta stb stc ste stl stp str sts stt stu sua sub suc sue sul sup sur sus sut suu taa tab tac tae tal tap tar tas tat tau tba tbb tbc tbe tbl tbp tbr tbs tbt tbu tca tcb tcc tce tcl tcp tcr tcs tct tcu te- tea teb tec tee tel tep ter tes tet teu tla tlc tle tll tlp tlr tls tlt tlu tpa tpb tpc tpe tpl tpp tpr tps tpt tpu tra trb trc tre trl trp trr trs trt tru tsa tsb tsc tse tsl tsp tsr tss tst tsu tta ttb ttc tte ttl ttp ttr tts ttt ttu tua tub tuc tue tul tup tur tus tut tuu ua- uaa uab uac uae ual uap uar uas uat uau uba ubb ubc ube ubl ubp ubr ubs ubt ubu uca ucb ucc uce ucl ucp ucr ucs uct ucu uea ueb uec uee uel uep uer ues uet ula ulb ulc ule ull ulp ulr uls ult ulu up- upa upb upc upe upp upr ups upt upu ur- ura urb urc ure url urp urr urs urt uru usa usb usc use usl