-al -er -ic -ol a-a a-b a-c a-i aaa aab aac aae aai aal aao aar aas aau aax ab- aba abb abc abe abi abl abo abr abs abu abx ac- aca acb acc ace aci acl aco acr acs acu acx aea aeb aec aee aei ael aeo aer aes aeu aex ai- aia aib aic aie aii ail aio air ais aiu aix al- ala alb alc ale ali all alo alr als alu alx aoa aob aoc aoe aoi aol aoo aor aos aou aox ar- ara arb arc are ari arl aro arr ars aru arx as- asa asb asc ase asi asl aso asr ass asu asx au- aua aub auc aue aui aul auo aur aus aux ax- axa axe axi axl axo axr axs axx b-u baa bab bac bae bai bal bao bar bas bau bax bba bbb bbc bbe bbi bbl bbo bbr bbs bbu bbx bca bcb bcc bce bci bcl bco bcr bcs bcu bcx be- bea beb bec bee bei bel beo ber bes beu bex bi- bia bib bic bie bii bil bio bir bis biu bix bla blb blc ble bli bll blo blr bls blu blx boa bob boc boe boi bol boo bor bos bou box bra brb bre bri brl bro brr brs bru brx bsa bsb bsc bse bsi bsl bso bsr bss bsu bsx bua bub buc bue bui bul buo bur bus buu bux bxb bxi bxl bxo bxx c-- caa cab cac cae cai cal cao car cas cau cax cba cbb cbc cbe cbi cbl cbo cbr cbs cbu cbx cca ccb ccc cce cci ccl cco ccr ccs ccu ccx ce- cea ceb cec cee cei cel ceo cer ces ceu cex ci- cia cib cic cie cii cil cio cir cis ciu cix cl- cla clb clc cle cli cll clo clr cls clu clx co- coa cob coc coe coi col coo cor cos cou cox cra crb crc cre cri crl cro crr crs cru crx csa csb csc cse csi csl cso csr css csu csx cua cub cuc cue cui cul cuo cur cus cuu cxc cxi cxl cxo cxr cxs cxx eaa eab eac eae eai eal eao ear eas eau eax eba ebb ebc ebe ebi ebl ebo ebr ebs ebu ebx ec- eca ecb ecc ece eci ecl eco ecr ecs ecu ecx eea eeb eec eee eel eeo eer ees eex eia eib eic eie eii eil eio eir eis eiu eix ela elb elc ele eli ell elo elr els elu elx eo- eoa eob eoc eoe eoi eol eoo eor eos eou era erb erc ere eri erl ero err ers eru es- esa esb esc ese esi esl eso esr ess esu esx eu- eua eub euc eue eui eul eur eus eux ex- exa exc exe exi exl exo exr exs exu exx ia- iaa iab iac iae iai ial iao iar ias iau iba ibb ibc ibe ibi ibl ibo ibr ibs ibu ibx ica icb icc ice ici icl ico icr ics icu ie- iea iec iee iei iel ier ies iex iia iib iic iie iii iil iio iir iis iiu iix il- ila ilb ilc ile ili ill ilo ilr ils ilu ilx io- ioa iob ioc ioe ioi iol ioo ior ios iou ir- ira irb irc ire iri irl iro irr irs iru irx is- isa isb isc ise isi isl iso isr iss isu iu- iua iub iuc iue iui iur ius ixc ixe ixi ixl la- laa lab lac lae lai lal lao lar las lau lax lba lbb lbc lbe lbi lbl lbo lbr lbs lbu lbx lca lcb lcc lce lci lcl lco lcr lcs lcu lcx lea leb lec lee lei lel leo ler les leu lex lia lib lic lie lii lil lio lir lis liu lix lla llb llc lle lli lll llo llr lls llu loa lob loc loe loi lol loo lor los lou lox lra lrb lrc lri lro lrr lrs lru lsa lsb lsc lse lsi lsl lso lsr lss lsu lua lub luc lue lui lul luo lur lus luu lux lxc lxi lxo lxr lxx o-i oaa oab oac oae oai oal oao oar oas oau oax ob- oba obb obc obe obi obl obo obr obs obu obx oc- oca ocb occ oci ocl oco ocr ocs ocu ocx oea oeb oec oee oei oel oeo oer oes oex oia oib oic oie oii oil oio oir ois oiu ola olb olc ole oli oll olo ols olu oo- ooa oob ooc ooi ool ooo oor oos oox or- ora orb orc ore ori orl oro orr ors oru orx os- osa osb osc ose osi osl oso osr oss osu osx ou- oua ouc oue oui oul ouo our ous ox- oxa oxb oxc oxi oxo oxx ra- raa rab rac rae rai ral rao rar ras rau rax rba rbb rbc rbe rbi rbl rbo rbr rbs rbu rbx rca rcb rcc rce rci rcl rco rcr rcs rcu rcx re- rea reb rec ree rei rel reo rer res reu rex ria rib ric rie rii ril rio rir ris rix rla rlc rle rli rll rlo rlr rls rlu roa rob roc roe roi rol roo ror ros rou rox rra rrb rrc rri rrl rrr rrs rru rsa rsb rsc rse rsi rsl rso rsr rss rsu rsx rua rub ruc rue rui ruo rur rus ruu rux rxr rxs saa sab sac sae sai sal sao sar sas sau sax sba sbb sbc sbe sbi sbl sbo sbr sbs sbu sbx sca scb scc sce sci scl sco scr scs scu scx se- sea seb sec see sei sel seo ser ses seu sex sia sib sic sie sii sil sio sir sis siu six sla slb slc sle sli sll slo slr sls slu slx soa