-al a-a a-b a-c a-t aaa aab aac aae aal aas aat aau aax ab- aba abb abc abe abl abs abt abu abx ac- aca acb acc ace acl acs act acu acx aea aeb aec aee ael aes aet aeu aex al- ala alb alc ale all als alt alu alx as- asa asb asc ase asl ass ast asu asx at- ata atb atc ate atl ats att atu atx au- aua aub auc aue aul aus aut aux ax- axa axe axl axs axt axx b-u baa bab bac bae bal bas bat bau bax bba bbb bbc bbe bbl bbs bbt bbu bbx bca bcb bcc bce bcl bcs bct bcu bcx be- bea beb bec bee bel bes bet beu bex bla blb blc ble bll bls blt blu blx bsa bsb bsc bse bsl bss bst bsu bsx bta btb btc bte btl bts btt btu btx bua bub buc bue bul bus but buu bux bxb bxl bxx c-- caa cab cac cae cal cas cat cau cax cba cbb cbc cbe cbl cbs cbt cbu cbx cca ccb ccc cce ccl ccs cct ccu ccx ce- cea ceb cec cee cel ces cet ceu cex cl- cla clb clc cle cll cls clt clu clx csa csb csc cse csl css cst csu csx cta ctb ctc cte ctl cts ctt ctu ctx cua cub cuc cue cul cus cut cuu cxc cxl cxs cxt cxx eaa eab eac eae eal eas eat eau eax eba ebb ebc ebe ebl ebs ebt ebu ebx ec- eca ecb ecc ece ecl ecs ect ecu ecx eea eeb eec eee eel ees eet eex ela elb elc ele ell els elt elu elx es- esa esb esc ese esl ess est esu esx eta etb etc ete etl ets ett etu etx eu- eua eub euc eue eul eus eut eux ex- exa exc exe exl exs ext exu exx la- laa lab lac lae lal las lat lau lax lba lbb lbc lbe lbl lbs lbt lbu lbx lca lcb lcc lce lcl lcs lct lcu lcx lea leb lec lee lel les let leu lex lla llb llc lle lll lls llt llu lsa lsb lsc lse lsl lss lst lsu lta ltb ltc lte ltl lts ltt ltu ltx lua lub luc lue lul lus lut luu lux lxc lxx saa sab sac sae sal sas sat sau sax sba sbb sbc sbe sbl sbs sbt sbu sbx sca scb scc sce scl scs sct scu scx se- sea seb sec see sel ses set seu sex sla slb slc sle sll sls slt slu slx ss- ssa ssb ssc sse ssl sss sst ssu ssx sta stb stc ste stl sts stt stu stx sua sub suc sue sul sus sut suu sux sxc sxl sxs sxt sxu t-x taa tab tac tae tal tas tat tau tax tba tbb tbc tbe tbl tbs tbt tbu tca tcb tcc tce tcl tcs tct tcu tcx te- tea teb tec tee tel tes tet teu tex tla tlc tle tll tls tlt tlu tlx tsa tsb tsc tse tsl tss tst tsu tsx tta ttb ttc tte ttl tts ttt ttu ttx tua tub tuc tue tul tus tut tuu tux txe txl txs txt txu ua- uaa uab uac uae ual uas uat uau uba ubb ubc ube ubl ubs ubt ubu ubx uca ucb ucc uce ucl ucs uct ucu uea ueb uec uee uel ues uet ula ulb ulc ule ull uls ult ulu usa usb usc use usl uss ust usu usx uta utb utc ute utl uts utt utu utx uua uuc uue uus uut uuu uxb uxc uxt uxu xaa xac xal xas xat xau xbc xbe xbl xbx xcb xcl xcx xee xel xes xet xeu xex xla xlb xls xlt xsa xsb xsc xsl xss xst xtc xts xtx xue xul xus xxl xxx