-al -er -ol a-a a-b a-c aaa aab aac aae aal aam aao aap aar aax ab- aba abb abc abe abl abm abo abp abr abx ac- aca acb acc ace acl acm aco acp acr acx aea aeb aec aee ael aem aeo aep aer aex al- ala alb alc ale all alm alo alp alr alx ama amb amc ame aml amm amo amp amr amx aoa aob aoc aoe aol aom aoo aop aor aox ap- apa apb apc ape apl apm apo app apr apx ar- ara arb arc are arl arm aro arp arr arx ax- axa axe axl axm axo axp axr axx b-p baa bab bac bae bal bam bao bap bar bax bba bbb bbc bbe bbl bbm bbo bbp bbr bbx bca bcb bcc bce bcl bcm bco bcp bcr bcx be- bea beb bec bee bel bem beo bep ber bex bla blb blc ble bll blm blo blp blr blx bma bmb bmc bme bml bmm bmo bmp bmr bmx boa bob boc boe bol bom boo bop bor box bpa bpb bpc bpe bpl bpm bpo bpp bpr bpx bra brb bre brl brm bro brp brr brx bxb bxl bxm bxo bxx c-- caa cab cac cae cal cam cao cap car cax cba cbb cbc cbe cbl cbm cbo cbp cbr cbx cca ccb ccc cce ccl ccm cco ccp ccr ccx ce- cea ceb cec cee cel cem ceo cep cer cex cl- cla clb clc cle cll clm clo clp clr clx cma cmb cmc cme cml cmm cmo cmp cmr cmx co- coa cob coc coe col com coo cop cor cox cpa cpb cpc cpe cpl cpm cpo cpp cpr cpx cra crb crc cre crl crm cro crp crr crx cxc cxl cxo cxp cxr cxx eaa eab eac eae eal eam eao eap ear eax eba ebb ebc ebe ebl ebm ebo ebp ebr ebx ec- eca ecb ecc ece ecl ecm eco ecr ecx eea eeb eec eee eel eem eeo eep eer eex ela elb elc ele ell elm elo elp elr elx em- ema emb emc eme eml emm emo emp emr emx eo- eoa eob eoc eoe eol eom eoo eop eor ep- epa epb epc epe epl epm epo epp epr epx era erb erc ere erl erm ero erp err ex- exa exc exe exl exo exp exr exx l-p la- laa lab lac lae lal lam lao lap lar lax lba lbb lbc lbe lbl lbm lbo lbp lbr lbx lca lcb lcc lce lcl lcm lco lcp lcr lcx lea leb lec lee lel lem leo lep ler lex lla llb llc lle lll llm llo llp llr lma lmb lmc lme lml lmm lmo lmp lmr loa lob loc loe lol lom loo lop lor lox lpa lpb lpc lpe lpl lpm lpo lpp lpr lpx lra lrb lrc lrm lro lrp lrr lxc lxo lxr lxx m-o m-r maa mab mac mae mal mam mao map mar max mba mbb mbc mbe mbl mbm mbo mbp mbr mbx mc- mca mcb mcc mce mcl mcm mco mcp mcr mcx mea meb mec mee mel mem meo mep mer mex mla mlb mlc mle mll mlm mlo mlp mlr mlx mma mmb mmc mme mml mmm mmo mmp mmr mmx moa mob moc moe mol mom moo mop mor mox mpa mpb mpc mpe mpl mpm mpo mpp mpr mpx mra mrb mrc mre mrl mrm mro mrp mrr mrx mxa mxc mxl mxp mxr oaa oab oac oae oal oam oao oap oar oax ob- oba obb obc obe obl obm obo obp obr obx oc- oca ocb occ ocl ocm oco ocp ocr ocx oea oeb oec oee oel oem oeo oep oer oex ola olb olc ole oll olm olo olp om- oma omb omc ome oml omm omo omp omr omx oo- ooa oob ooc ool oom ooo oop oor oox op- opa opb opc ope opl opm opo opp opr opx or- ora orb orc ore orl orm oro orp orr orx ox- oxa oxb oxc oxo oxx p-p paa pab pac pae pal pam pao pap par pax pba pbb pbc pbe pbl pbm pbo pbp pbr pbx pca pcb pcc pce pcl pcm pco pcp pcr pcx pea peb pec pee pel pem peo pep per pex pla plb plc ple pll plm plo plp plr plx pma pmb pmc pme pml pmm pmo pmp pmr pmx poa pob poc poe pol pom poo pop por pox ppa ppb ppc ppe ppl ppm ppo ppp ppr ppx pra prb prc pre prl prm pro prp prr prx pxc pxe pxl pxm pxr ra- raa rab rac rae ral ram rao rap rar rax rba rbb rbc rbe rbl rbm rbo rbp rbr rbx rca rcb rcc rce rcl rcm rco rcp rcr rcx re- rea reb rec ree rel rem reo rep rer rex rla rlc rle rll rlm rlo rlp rlr rma rmb rmc rme rml rmm rmo rmp rmr rmx roa rob roc roe rol rom roo rop ror rox rpa rpb rpc rpe rpl rpm rpo rpp rpr rpx rra rrb rrc rrl rrm rrp rrr rxp rxr xaa xac xal xam xap xar xbc xbe xbl xbr xbx xcb xcl xcp xcr xcx xee xel xem xep xer xex xla xlb xlm xlr xma xmc xml xmm xmo xmp xmr xmx xoa xoc xom xoo xop xor xox xpa xpb xpc xpe xpl xpm xpo xpp xrc xrx xxl xxo xxp xxx

a-be aaaa aaab aaac aaae aaal aaam aaap aaar aaba aabb aabc aabl aabm aabp aaca aacb aacc aace aacl aacm aaco aacp aacr aaea aaec aaem aaep aala aalc aale aall aalo aama aamb aamc aame aamo aamp aamr aaoe aaoo aapa aapc aapl aapm aapo aara aarc aare aarm aaro aarp abaa abab abac abae abal abam abap abar abax abb- abba abbb abbe abbo