-al a-a a-b a-i aaa aab aae aai aal aas aau aax ab- aba abb abe abi abl abs abu abx aea aeb aee aei ael aes aeu aex ai- aia aib aie aii ail ais aiu aix al- ala alb ale ali all als alu alx as- asa asb ase asi asl ass asu asx au- aua aub aue aui aul aus aux ax- axa axe axi axl axs axx b-u baa bab bae bai bal bas bau bax bba bbb bbe bbi bbl bbs bbu bbx be- bea beb bee bei bel bes beu bex bi- bia bib bie bii bil bis biu bix bla blb ble bli bll bls blu blx bsa bsb bse bsi bsl bss bsu bsx bua bub bue bui bul bus buu bux bxb bxi bxl bxx eaa eab eae eai eal eas eau eax eba ebb ebe ebi ebl ebs ebu ebx eea eeb eee eel ees eex eia eib eie eii eil eis eiu eix ela elb ele eli ell els elu elx es- esa esb ese esi esl ess esu esx eu- eua eub eue eui eul eus eux ex- exa exe exi exl exs exu exx ia- iaa iab iae iai ial ias iau iba ibb ibe ibi ibl ibs ibu ibx ie- iea iee iei iel ies iex iia iib iie iii iil iis iiu iix il- ila ilb ile ili ill ils ilu ilx is- isa isb ise isi isl iss isu iu- iua iub iue iui ius ixe ixi ixl la- laa lab lae lai lal las lau lax lba lbb lbe lbi lbl lbs lbu lbx lea leb lee lei lel les leu lex lia lib lie lii lil lis liu lix lla llb lle lli lll lls llu lsa lsb lse lsi lsl lss lsu lua lub lue lui lul lus luu lux lxi lxx saa sab sae sai sal sas sau sax sba sbb sbe sbi sbl sbs sbu sbx se- sea seb see sei sel ses seu sex sia sib sie sii sil sis siu six sla slb sle sli sll sls slu slx ss- ssa ssb sse ssi ssl sss ssu ssx sua sub sue sui sul sus suu sux sxi sxl sxs sxu ua- uaa uab uae uai ual uas uau uba ubb ube ubi ubl ubs ubu ubx uea ueb uee uei uel ues uia uib uie uii uil uis uiu ula ulb ule uli ull uls ulu usa usb use usi usl uss usu usx uua uue uus uuu uxb uxu xaa xal xas xau xbe xbl xbx xee xel xes xeu xex xia xie xii xis xiu xix xla xlb xli xls xsa xsb xsi xsl xss xue xui xul xus xxi xxl xxx