-al a-a a-b a-t aaa aab aae aal aas aat aau aax ab- aba abb abe abl abs abt abu abx aea aeb aee ael aes aet aeu aex al- ala alb ale all als alt alu alx as- asa asb ase asl ass ast asu asx at- ata atb ate atl ats att atu atx au- aua aub aue aul aus aut aux ax- axa axe axl axs axt axx b-u baa bab bae bal bas bat bau bax bba bbb bbe bbl bbs bbt bbu bbx be- bea beb bee bel bes bet beu bex bla blb ble bll bls blt blu blx bsa bsb bse bsl bss bst bsu bsx bta btb bte btl bts btt btu btx bua bub bue bul bus but buu bux bxb bxl bxx eaa eab eae eal eas eat eau eax eba ebb ebe ebl ebs ebt ebu ebx eea eeb eee eel ees eet eex ela elb ele ell els elt elu elx es- esa esb ese esl ess est esu esx eta etb ete etl ets ett etu etx eu- eua eub eue eul eus eut eux ex- exa exe exl exs ext exu exx la- laa lab lae lal las lat lau lax lba lbb lbe lbl lbs lbt lbu lbx lea leb lee lel les let leu lex lla llb lle lll lls llt llu lsa lsb lse lsl lss lst lsu lta ltb lte ltl lts ltt ltu ltx lua lub lue lul lus lut luu lux lxx saa sab sae sal sas sat sau sax sba sbb sbe sbl sbs sbt sbu sbx se- sea seb see sel ses set seu sex sla slb sle sll sls slt slu slx ss- ssa ssb sse ssl sss sst ssu ssx sta stb ste stl sts stt stu stx sua sub sue sul sus sut suu sux sxl sxs sxt sxu t-x taa tab tae tal tas tat tau tax tba tbb tbe tbl tbs tbt tbu te- tea teb tee tel tes tet teu tex tla tle tll tls tlt tlu tlx tsa tsb tse tsl tss tst tsu tsx tta ttb tte ttl tts ttt ttu ttx tua tub tue tul tus tut tuu tux txe txl txs txt txu ua- uaa uab uae ual uas uat uau uba ubb ube ubl ubs ubt ubu ubx uea ueb uee uel ues uet ula ulb ule ull uls ult ulu usa usb use usl uss ust usu usx uta utb ute utl uts utt utu utx uua uue uus uut uuu uxb uxt uxu xaa xal xas xat xau xbe xbl xbx xee xel xes xet xeu xex xla xlb xls xlt xsa xsb xsl xss xst xts xtx xue xul xus xxl xxx